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65 vulnerabilities by Curl

CVE-2026-9547 (GCVE-0-2026-9547)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:18 – Updated: 2026-07-03 06:18
VLAI?
Title
SSH improper host validation
Summary
When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Joshua Rogers (Aisle Research)
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
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              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.0",
              "status": "affected",
              "version": "8.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.6.0",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.5.0",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.3.0",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.1",
              "status": "affected",
              "version": "8.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.0",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.2",
              "status": "affected",
              "version": "8.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.1",
              "status": "affected",
              "version": "8.1.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.0",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.1",
              "status": "affected",
              "version": "8.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.0",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.1",
              "status": "affected",
              "version": "7.79.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.0",
              "status": "affected",
              "version": "7.79.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.78.0",
              "status": "affected",
              "version": "7.78.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.77.0",
              "status": "affected",
              "version": "7.77.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.1",
              "status": "affected",
              "version": "7.76.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.0",
              "status": "affected",
              "version": "7.76.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.75.0",
              "status": "affected",
              "version": "7.75.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.74.0",
              "status": "affected",
              "version": "7.74.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.73.0",
              "status": "affected",
              "version": "7.73.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.72.0",
              "status": "affected",
              "version": "7.72.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.71.1",
              "status": "affected",
              "version": "7.71.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.71.0",
              "status": "affected",
              "version": "7.71.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.70.0",
              "status": "affected",
              "version": "7.70.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.69.1",
              "status": "affected",
              "version": "7.69.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.69.0",
              "status": "affected",
              "version": "7.69.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Joshua Rogers (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Joshua Rogers (Aisle Research)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When a libcurl-based application performs transfers via `SCP://` or `SFTP://`\nand utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an\nuntrusted server. This vulnerability occurs when a server presents a host key\ntype that does not match the specific key type already recorded for that host\nin the `known_hosts` file. Instead of rejecting the mismatch, the callback\nmechanism fails to properly enforce the restriction, allowing the connection\nto succeed without warning and risking a potential man-in-the-middle attack."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-297 Improper Validation of Certificate with Host Mismatch",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:18:44.499Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-9547.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-9547.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3751712"
        }
      ],
      "title": "SSH improper host validation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-9547",
    "datePublished": "2026-07-03T06:18:44.499Z",
    "dateReserved": "2026-05-26T06:45:27.665Z",
    "dateUpdated": "2026-07-03T06:18:44.499Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-9546 (GCVE-0-2026-9546)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:18 – Updated: 2026-07-03 06:18
VLAI?
Title
sending old referer
Summary
A vulnerability in libcurl caused the HTTP `Referer:` header to persist even when explicitly cleared. While the documentation states that passing NULL to `CURLOPT_REFERER` suppresses the header, the option failed to clear the internal state. As a result the previous referrer string was erroneously reused and sent in subsequent requests, potentially leaking sensitive information to unintended servers.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Create a notification for this product.
Credits
renjian on hackerone Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "renjian on hackerone"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in libcurl caused the HTTP `Referer:` header to persist even\nwhen explicitly cleared. While the documentation states that passing NULL to\n`CURLOPT_REFERER` suppresses the header, the option failed to clear the\ninternal state. As a result the previous referrer string was erroneously\nreused and sent in subsequent requests, potentially leaking sensitive\ninformation to unintended servers."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:18:14.447Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-9546.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-9546.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3754343"
        }
      ],
      "title": "sending old referer"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-9546",
    "datePublished": "2026-07-03T06:18:14.447Z",
    "dateReserved": "2026-05-26T06:45:18.723Z",
    "dateUpdated": "2026-07-03T06:18:14.447Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-9545 (GCVE-0-2026-9545)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:17 – Updated: 2026-07-03 06:17
VLAI?
Title
exposing HTTP/3 early data
Summary
In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certificate. When libcurl returns to the hostname the second time with a cached SSL session (`CURLOPT_SSL_SESSIONID_CACHE` is not disabled) and early data enabled (the `CURLSSLOPT_EARLYDATA` bit is set in `CURLOPT_SSL_OPTIONS`), libcurl might send off the second request's bytes on that new connection *before* enforcing the certificate verification failure. Potentially leaking sensitive information.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Create a notification for this product.
Credits
Eunsoo Kim (Autonomous Code Security team at Microsoft) Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Eunsoo Kim (Autonomous Code Security team at Microsoft)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In this scenario, libcurl first uses a proper HTTP/3 server for the initial\ntransfers, and when it makes a second transfer to the same site it has been\nreplaced by the attacker\u0027s impostor machine - without a valid certificate.\n\nWhen libcurl returns to the hostname the second time with a cached SSL session\n(`CURLOPT_SSL_SESSIONID_CACHE` is not disabled) and early data enabled (the\n`CURLSSLOPT_EARLYDATA` bit is set in `CURLOPT_SSL_OPTIONS`), libcurl might\nsend off the second request\u0027s bytes on that new connection *before* enforcing\nthe certificate verification failure. Potentially leaking sensitive\ninformation."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:17:55.931Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-9545.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-9545.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3752888"
        }
      ],
      "title": "exposing HTTP/3 early data"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-9545",
    "datePublished": "2026-07-03T06:17:55.931Z",
    "dateReserved": "2026-05-26T06:45:08.680Z",
    "dateUpdated": "2026-07-03T06:17:55.931Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-9080 (GCVE-0-2026-9080)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:17 – Updated: 2026-07-03 06:17
VLAI?
Title
UAF after pause in socket callback
Summary
Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Joshua Rogers (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer\u0027s\nmemory has been freed."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-416 Use After Free",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:17:34.905Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-9080.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-9080.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3749204"
        }
      ],
      "title": "UAF after pause in socket callback"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-9080",
    "datePublished": "2026-07-03T06:17:34.905Z",
    "dateReserved": "2026-05-20T12:59:50.588Z",
    "dateUpdated": "2026-07-03T06:17:34.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-9079 (GCVE-0-2026-9079)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:16 – Updated: 2026-07-03 06:16
VLAI?
Title
stale proxy password leak
Summary
libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Create a notification for this product.
Credits
Guancheng Li Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Guancheng Li"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl had a flaw that when instructed to clear proxy authentication\ncredentials which made it not do so, leaving the old credentials around to get\nused for subsequent transfers that should not know nor use them."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-522 Insufficiently Protected Credentials",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:16:51.127Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-9079.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-9079.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3750295"
        }
      ],
      "title": "stale proxy password leak"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-9079",
    "datePublished": "2026-07-03T06:16:51.127Z",
    "dateReserved": "2026-05-20T12:59:41.444Z",
    "dateUpdated": "2026-07-03T06:16:51.127Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8932 (GCVE-0-2026-8932)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:16 – Updated: 2026-07-03 06:16
VLAI?
Title
incomplete mTLS config matching in conn reuse
Summary
libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS settings related to client certificates were left out from the configuration match checks, making them match too easily. In particular options related to the private key.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Affected: 7.11.2 , ≤ 7.11.2 (semver)
Affected: 7.11.1 , ≤ 7.11.1 (semver)
Affected: 7.11.0 , ≤ 7.11.0 (semver)
Affected: 7.10.8 , ≤ 7.10.8 (semver)
Affected: 7.10.7 , ≤ 7.10.7 (semver)
Affected: 7.10.6 , ≤ 7.10.6 (semver)
Affected: 7.10.5 , ≤ 7.10.5 (semver)
Affected: 7.10.4 , ≤ 7.10.4 (semver)
Affected: 7.10.3 , ≤ 7.10.3 (semver)
Affected: 7.10.2 , ≤ 7.10.2 (semver)
Affected: 7.10.1 , ≤ 7.10.1 (semver)
Affected: 7.10 , ≤ 7.10 (semver)
Affected: 7.9.8 , ≤ 7.9.8 (semver)
Affected: 7.9.7 , ≤ 7.9.7 (semver)
Affected: 7.9.6 , ≤ 7.9.6 (semver)
Affected: 7.9.5 , ≤ 7.9.5 (semver)
Affected: 7.9.4 , ≤ 7.9.4 (semver)
Affected: 7.9.3 , ≤ 7.9.3 (semver)
Affected: 7.9.2 , ≤ 7.9.2 (semver)
Affected: 7.9.1 , ≤ 7.9.1 (semver)
Affected: 7.9 , ≤ 7.9 (semver)
Affected: 7.8.1 , ≤ 7.8.1 (semver)
Affected: 7.8 , ≤ 7.8 (semver)
Affected: 7.7.3 , ≤ 7.7.3 (semver)
Affected: 7.7.2 , ≤ 7.7.2 (semver)
Affected: 7.7.1 , ≤ 7.7.1 (semver)
Affected: 7.7 , ≤ 7.7 (semver)
Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Joshua Rogers (Aisle Research)
Show details on NVD website

{
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          "product": "curl",
          "vendor": "curl",
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            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
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              "versionType": "semver"
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              "lessThanOrEqual": "8.7.0",
              "status": "affected",
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              "lessThanOrEqual": "8.6.0",
              "status": "affected",
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            {
              "lessThanOrEqual": "8.5.0",
              "status": "affected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.3.0",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.1",
              "status": "affected",
              "version": "8.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.0",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.2",
              "status": "affected",
              "version": "8.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.1",
              "status": "affected",
              "version": "8.1.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.0",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.1",
              "status": "affected",
              "version": "8.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.0",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.1",
              "status": "affected",
              "version": "7.79.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.0",
              "status": "affected",
              "version": "7.79.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.78.0",
              "status": "affected",
              "version": "7.78.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.77.0",
              "status": "affected",
              "version": "7.77.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.1",
              "status": "affected",
              "version": "7.76.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.0",
              "status": "affected",
              "version": "7.76.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.75.0",
              "status": "affected",
              "version": "7.75.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.74.0",
              "status": "affected",
              "version": "7.74.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.73.0",
              "status": "affected",
              "version": "7.73.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.72.0",
              "status": "affected",
              "version": "7.72.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.71.1",
              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.71.0",
              "versionType": "semver"
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              "status": "affected",
              "version": "7.70.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.69.1",
              "status": "affected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.69.0",
              "status": "affected",
              "version": "7.69.0",
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              "lessThanOrEqual": "7.68.0",
              "status": "affected",
              "version": "7.68.0",
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              "lessThanOrEqual": "7.67.0",
              "status": "affected",
              "version": "7.67.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.66.0",
              "status": "affected",
              "version": "7.66.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.3",
              "status": "affected",
              "version": "7.65.3",
              "versionType": "semver"
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              "lessThanOrEqual": "7.65.2",
              "status": "affected",
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.64.0",
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              "status": "affected",
              "version": "7.63.0",
              "versionType": "semver"
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              "status": "affected",
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.61.0",
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              "status": "affected",
              "version": "7.59.0",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.58.0",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.57.0",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "7.56.1",
              "versionType": "semver"
            },
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              "status": "affected",
              "version": "7.56.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.1",
              "status": "affected",
              "version": "7.55.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.0",
              "status": "affected",
              "version": "7.55.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.1",
              "status": "affected",
              "version": "7.54.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.0",
              "status": "affected",
              "version": "7.54.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.1",
              "status": "affected",
              "version": "7.53.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.0",
              "status": "affected",
              "version": "7.53.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.1",
              "status": "affected",
              "version": "7.52.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.0",
              "status": "affected",
              "version": "7.52.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.51.0",
              "status": "affected",
              "version": "7.51.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.3",
              "status": "affected",
              "version": "7.50.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.2",
              "status": "affected",
              "version": "7.50.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.1",
              "status": "affected",
              "version": "7.50.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.0",
              "status": "affected",
              "version": "7.50.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.49.1",
              "status": "affected",
              "version": "7.49.1",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.49.0",
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            {
              "lessThanOrEqual": "7.48.0",
              "status": "affected",
              "version": "7.48.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.47.1",
              "status": "affected",
              "version": "7.47.1",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.47.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.45.0",
              "versionType": "semver"
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              "status": "affected",
              "version": "7.44.0",
              "versionType": "semver"
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              "status": "affected",
              "version": "7.43.0",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.42.1",
              "versionType": "semver"
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              "version": "7.42.0",
              "versionType": "semver"
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              "status": "affected",
              "version": "7.41.0",
              "versionType": "semver"
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              "version": "7.40.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
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              "status": "affected",
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
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              "status": "affected",
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            {
              "lessThanOrEqual": "7.31.0",
              "status": "affected",
              "version": "7.31.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.30.0",
              "status": "affected",
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              "versionType": "semver"
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              "lessThanOrEqual": "7.29.0",
              "status": "affected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.28.1",
              "status": "affected",
              "version": "7.28.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.28.0",
              "status": "affected",
              "version": "7.28.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.27.0",
              "status": "affected",
              "version": "7.27.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.26.0",
              "status": "affected",
              "version": "7.26.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.25.0",
              "status": "affected",
              "version": "7.25.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.24.0",
              "status": "affected",
              "version": "7.24.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.23.1",
              "status": "affected",
              "version": "7.23.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.23.0",
              "status": "affected",
              "version": "7.23.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.22.0",
              "status": "affected",
              "version": "7.22.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.7",
              "status": "affected",
              "version": "7.21.7",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.21.6",
              "status": "affected",
              "version": "7.21.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.5",
              "status": "affected",
              "version": "7.21.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.4",
              "status": "affected",
              "version": "7.21.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.3",
              "status": "affected",
              "version": "7.21.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.2",
              "status": "affected",
              "version": "7.21.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.1",
              "status": "affected",
              "version": "7.21.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.21.0",
              "status": "affected",
              "version": "7.21.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.20.1",
              "status": "affected",
              "version": "7.20.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.20.0",
              "status": "affected",
              "version": "7.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.7",
              "status": "affected",
              "version": "7.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.6",
              "status": "affected",
              "version": "7.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.5",
              "status": "affected",
              "version": "7.19.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.4",
              "status": "affected",
              "version": "7.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.3",
              "status": "affected",
              "version": "7.19.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.2",
              "status": "affected",
              "version": "7.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.1",
              "status": "affected",
              "version": "7.19.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.19.0",
              "status": "affected",
              "version": "7.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.18.2",
              "status": "affected",
              "version": "7.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.18.1",
              "status": "affected",
              "version": "7.18.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.18.0",
              "status": "affected",
              "version": "7.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.17.1",
              "status": "affected",
              "version": "7.17.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.17.0",
              "status": "affected",
              "version": "7.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.4",
              "status": "affected",
              "version": "7.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.3",
              "status": "affected",
              "version": "7.16.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.2",
              "status": "affected",
              "version": "7.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.1",
              "status": "affected",
              "version": "7.16.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.0",
              "status": "affected",
              "version": "7.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.5",
              "status": "affected",
              "version": "7.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.4",
              "status": "affected",
              "version": "7.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.3",
              "status": "affected",
              "version": "7.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.2",
              "status": "affected",
              "version": "7.15.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.1",
              "status": "affected",
              "version": "7.15.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.0",
              "status": "affected",
              "version": "7.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.14.1",
              "status": "affected",
              "version": "7.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.14.0",
              "status": "affected",
              "version": "7.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.2",
              "status": "affected",
              "version": "7.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.1",
              "status": "affected",
              "version": "7.13.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.0",
              "status": "affected",
              "version": "7.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.3",
              "status": "affected",
              "version": "7.12.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.2",
              "status": "affected",
              "version": "7.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.1",
              "status": "affected",
              "version": "7.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.0",
              "status": "affected",
              "version": "7.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.11.2",
              "status": "affected",
              "version": "7.11.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.11.1",
              "status": "affected",
              "version": "7.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.11.0",
              "status": "affected",
              "version": "7.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.8",
              "status": "affected",
              "version": "7.10.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.7",
              "status": "affected",
              "version": "7.10.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.6",
              "status": "affected",
              "version": "7.10.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.5",
              "status": "affected",
              "version": "7.10.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.4",
              "status": "affected",
              "version": "7.10.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.3",
              "status": "affected",
              "version": "7.10.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.2",
              "status": "affected",
              "version": "7.10.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.1",
              "status": "affected",
              "version": "7.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10",
              "status": "affected",
              "version": "7.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.8",
              "status": "affected",
              "version": "7.9.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.7",
              "status": "affected",
              "version": "7.9.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.6",
              "status": "affected",
              "version": "7.9.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.5",
              "status": "affected",
              "version": "7.9.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.4",
              "status": "affected",
              "version": "7.9.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.3",
              "status": "affected",
              "version": "7.9.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.2",
              "status": "affected",
              "version": "7.9.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9.1",
              "status": "affected",
              "version": "7.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.9",
              "status": "affected",
              "version": "7.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.8.1",
              "status": "affected",
              "version": "7.8.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.8",
              "status": "affected",
              "version": "7.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.7.3",
              "status": "affected",
              "version": "7.7.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.7.2",
              "status": "affected",
              "version": "7.7.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.7.1",
              "status": "affected",
              "version": "7.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.7",
              "status": "affected",
              "version": "7.7",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Joshua Rogers (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Joshua Rogers (Aisle Research)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl would reuse a previously created connection even when some mTLS config\nrelated option had been changed that should have prohibited reuse.\n\nlibcurl keeps previously used connections in a connection pool for subsequent\ntransfers to reuse if one of them matches the setup. However, some TLS\nsettings related to client certificates were left out from the configuration\nmatch checks, making them match too easily. In particular options related to\nthe private key."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-305 Authentication Bypass by Primary Weakness",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:16:30.485Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8932.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8932.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3733910"
        }
      ],
      "title": "incomplete mTLS config matching in conn reuse"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8932",
    "datePublished": "2026-07-03T06:16:30.485Z",
    "dateReserved": "2026-05-19T08:56:58.825Z",
    "dateUpdated": "2026-07-03T06:16:30.485Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8927 (GCVE-0-2026-8927)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:16 – Updated: 2026-07-03 06:16
VLAI?
Title
env-set cross-proxy Digest auth state leak
Summary
When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against `proxyA` using Digest auth, a subsequent transfer routed through `proxyB` erroneously leaks the `Proxy-Authorization:` header intended solely for `proxyA`.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Create a notification for this product.
Credits
Ady Elouej Daniel Stenberg
Show details on NVD website

{
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              "version": "7.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.18.2",
              "status": "affected",
              "version": "7.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.18.1",
              "status": "affected",
              "version": "7.18.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.18.0",
              "status": "affected",
              "version": "7.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.17.1",
              "status": "affected",
              "version": "7.17.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.17.0",
              "status": "affected",
              "version": "7.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.4",
              "status": "affected",
              "version": "7.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.3",
              "status": "affected",
              "version": "7.16.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.2",
              "status": "affected",
              "version": "7.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.1",
              "status": "affected",
              "version": "7.16.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.0",
              "status": "affected",
              "version": "7.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.5",
              "status": "affected",
              "version": "7.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.4",
              "status": "affected",
              "version": "7.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.3",
              "status": "affected",
              "version": "7.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.2",
              "status": "affected",
              "version": "7.15.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.1",
              "status": "affected",
              "version": "7.15.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.0",
              "status": "affected",
              "version": "7.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.14.1",
              "status": "affected",
              "version": "7.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.14.0",
              "status": "affected",
              "version": "7.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.2",
              "status": "affected",
              "version": "7.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.1",
              "status": "affected",
              "version": "7.13.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.0",
              "status": "affected",
              "version": "7.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.3",
              "status": "affected",
              "version": "7.12.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.2",
              "status": "affected",
              "version": "7.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.1",
              "status": "affected",
              "version": "7.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.0",
              "status": "affected",
              "version": "7.12.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ady Elouej"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When reusing a libcurl handle for sequential transfers driven by\nenvironment-variable proxy configuration, libcurl fails to clear the proxy\nauthentication state between requests. Specifically, if the initial transfer\nauthenticates against `proxyA` using Digest auth, a subsequent transfer routed\nthrough `proxyB` erroneously leaks the `Proxy-Authorization:` header intended\nsolely for `proxyA`."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-294 Authentication Bypass by Capture-replay",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:16:06.376Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8927.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8927.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3744543"
        }
      ],
      "title": "env-set cross-proxy Digest auth state leak"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8927",
    "datePublished": "2026-07-03T06:16:06.376Z",
    "dateReserved": "2026-05-19T08:12:08.842Z",
    "dateUpdated": "2026-07-03T06:16:06.376Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8926 (GCVE-0-2026-8926)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:15 – Updated: 2026-07-03 06:15
VLAI?
Title
password leak with netrc and user in URL
Summary
When asking curl to use a `.netrc` file to find credentials and at the same time specifying a URL with a username(without a password), like `https://user@example.com/`, curl could wrongly get and use the password for *another* user set in the `.netrc` file for that host if such a one exists and there is no match for the specified user.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Joshua Rogers (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When asking curl to use a `.netrc` file to find credentials and at the same\ntime specifying a URL with a username(without a password), like\n`https://user@example.com/`, curl could wrongly get and use the password for\n*another* user set in the `.netrc` file for that host if such a one exists and\nthere is no match for the specified user."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-522 Insufficiently Protected Credentials",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:15:45.735Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8926.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8926.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3735184"
        }
      ],
      "title": "password leak with netrc and user in URL"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8926",
    "datePublished": "2026-07-03T06:15:45.735Z",
    "dateReserved": "2026-05-19T08:11:58.393Z",
    "dateUpdated": "2026-07-03T06:15:45.735Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8925 (GCVE-0-2026-8925)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:15 – Updated: 2026-07-03 06:15
VLAI?
Title
SASL double-free
Summary
The curl logic that works with SASL authentication could end up cleaning up the GSASL context *twice* without clearing the pointer in between, making it `free()` the same pointer twice.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Viktor Szakats
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Joshua Rogers (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Viktor Szakats"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The curl logic that works with SASL authentication could end up cleaning up\nthe GSASL context *twice* without clearing the pointer in between, making it\n`free()` the same pointer twice."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-415 Double Free",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:15:25.448Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8925.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8925.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3735193"
        }
      ],
      "title": "SASL double-free"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8925",
    "datePublished": "2026-07-03T06:15:25.448Z",
    "dateReserved": "2026-05-19T08:11:49.032Z",
    "dateUpdated": "2026-07-03T06:15:25.448Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8924 (GCVE-0-2026-8924)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:15 – Updated: 2026-07-03 06:15
VLAI?
Title
trailing dot domain super cookie
Summary
A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Create a notification for this product.
Credits
vegagent on hackerone Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
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              "versionType": "semver"
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            {
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              "status": "affected",
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              "status": "affected",
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            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "8.12.0",
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            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
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            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
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            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.0",
              "status": "affected",
              "version": "8.7.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.6.0",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "semver"
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              "lessThanOrEqual": "8.5.0",
              "status": "affected",
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              "lessThanOrEqual": "8.4.0",
              "status": "affected",
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              "lessThanOrEqual": "8.3.0",
              "status": "affected",
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              "lessThanOrEqual": "8.2.1",
              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
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              "status": "affected",
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              "status": "affected",
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              "status": "affected",
              "version": "8.0.0",
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              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
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              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
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              "status": "affected",
              "version": "7.87.0",
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              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
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              "version": "7.78.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.77.0",
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              "version": "7.77.0",
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              "version": "7.74.0",
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              "status": "affected",
              "version": "7.72.0",
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              "lessThanOrEqual": "7.71.1",
              "status": "affected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.71.0",
              "status": "affected",
              "version": "7.71.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.70.0",
              "status": "affected",
              "version": "7.70.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.69.1",
              "status": "affected",
              "version": "7.69.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.69.0",
              "status": "affected",
              "version": "7.69.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.68.0",
              "status": "affected",
              "version": "7.68.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.67.0",
              "status": "affected",
              "version": "7.67.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.66.0",
              "status": "affected",
              "version": "7.66.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.65.3",
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              "version": "7.65.0",
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              "lessThanOrEqual": "7.64.1",
              "status": "affected",
              "version": "7.64.1",
              "versionType": "semver"
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              "lessThanOrEqual": "7.64.0",
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              "version": "7.64.0",
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              "status": "affected",
              "version": "7.63.0",
              "versionType": "semver"
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              "status": "affected",
              "version": "7.62.0",
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              "status": "affected",
              "version": "7.61.1",
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              "version": "7.61.0",
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              "status": "affected",
              "version": "7.60.0",
              "versionType": "semver"
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              "lessThanOrEqual": "7.59.0",
              "status": "affected",
              "version": "7.59.0",
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            },
            {
              "lessThanOrEqual": "7.58.0",
              "status": "affected",
              "version": "7.58.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.57.0",
              "status": "affected",
              "version": "7.57.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.1",
              "status": "affected",
              "version": "7.56.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.0",
              "status": "affected",
              "version": "7.56.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.1",
              "status": "affected",
              "version": "7.55.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.0",
              "status": "affected",
              "version": "7.55.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.1",
              "status": "affected",
              "version": "7.54.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.0",
              "status": "affected",
              "version": "7.54.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.53.1",
              "status": "affected",
              "version": "7.53.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.0",
              "status": "affected",
              "version": "7.53.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.52.1",
              "status": "affected",
              "version": "7.52.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.52.0",
              "status": "affected",
              "version": "7.52.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.51.0",
              "status": "affected",
              "version": "7.51.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.3",
              "status": "affected",
              "version": "7.50.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.2",
              "status": "affected",
              "version": "7.50.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.1",
              "status": "affected",
              "version": "7.50.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.50.0",
              "status": "affected",
              "version": "7.50.0",
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            {
              "lessThanOrEqual": "7.49.1",
              "status": "affected",
              "version": "7.49.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.0",
              "status": "affected",
              "version": "7.49.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.48.0",
              "status": "affected",
              "version": "7.48.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.1",
              "status": "affected",
              "version": "7.47.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.47.0",
              "status": "affected",
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            {
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              "status": "affected",
              "version": "7.46.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "vegagent on hackerone"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw in curl\u2019s cookie parsing logic allows a malicious HTTP server to set\n\u0027super cookies\u0027 that bypass the Public Suffix List check. This enables an\nattacker-controlled origin to inject cookies that curl subsequently scopes and\ntransmits to unrelated third-party domains."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-201 Information Exposure Through Sent Data",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:15:04.646Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8924.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8924.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3733905"
        }
      ],
      "title": "trailing dot domain super cookie"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8924",
    "datePublished": "2026-07-03T06:15:04.646Z",
    "dateReserved": "2026-05-19T08:11:35.441Z",
    "dateUpdated": "2026-07-03T06:15:04.646Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8458 (GCVE-0-2026-8458)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:14 – Updated: 2026-07-03 06:14
VLAI?
Title
wrong reuse for different services
Summary
libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Create a notification for this product.
Credits
Muhamad Arga Reksapati Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
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              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.0",
              "status": "affected",
              "version": "8.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.6.0",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.5.0",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.3.0",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.1",
              "status": "affected",
              "version": "8.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.0",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.2",
              "status": "affected",
              "version": "8.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.1",
              "status": "affected",
              "version": "8.1.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.0",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.1",
              "status": "affected",
              "version": "8.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.0",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.1",
              "status": "affected",
              "version": "7.79.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.0",
              "status": "affected",
              "version": "7.79.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.78.0",
              "status": "affected",
              "version": "7.78.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.77.0",
              "status": "affected",
              "version": "7.77.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.1",
              "status": "affected",
              "version": "7.76.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.0",
              "status": "affected",
              "version": "7.76.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.75.0",
              "status": "affected",
              "version": "7.75.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.74.0",
              "status": "affected",
              "version": "7.74.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.73.0",
              "status": "affected",
              "version": "7.73.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.72.0",
              "status": "affected",
              "version": "7.72.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.71.1",
              "status": "affected",
              "version": "7.71.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.71.0",
              "status": "affected",
              "version": "7.71.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.70.0",
              "status": "affected",
              "version": "7.70.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.69.1",
              "status": "affected",
              "version": "7.69.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.69.0",
              "status": "affected",
              "version": "7.69.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.68.0",
              "status": "affected",
              "version": "7.68.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.67.0",
              "status": "affected",
              "version": "7.67.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.66.0",
              "status": "affected",
              "version": "7.66.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.3",
              "status": "affected",
              "version": "7.65.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.2",
              "status": "affected",
              "version": "7.65.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.1",
              "status": "affected",
              "version": "7.65.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.0",
              "status": "affected",
              "version": "7.65.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.64.1",
              "status": "affected",
              "version": "7.64.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.64.0",
              "status": "affected",
              "version": "7.64.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.63.0",
              "status": "affected",
              "version": "7.63.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.62.0",
              "status": "affected",
              "version": "7.62.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.61.1",
              "status": "affected",
              "version": "7.61.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.61.0",
              "status": "affected",
              "version": "7.61.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.60.0",
              "status": "affected",
              "version": "7.60.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.59.0",
              "status": "affected",
              "version": "7.59.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.58.0",
              "status": "affected",
              "version": "7.58.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.57.0",
              "status": "affected",
              "version": "7.57.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.1",
              "status": "affected",
              "version": "7.56.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.0",
              "status": "affected",
              "version": "7.56.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.1",
              "status": "affected",
              "version": "7.55.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.0",
              "status": "affected",
              "version": "7.55.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.1",
              "status": "affected",
              "version": "7.54.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.0",
              "status": "affected",
              "version": "7.54.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.1",
              "status": "affected",
              "version": "7.53.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.0",
              "status": "affected",
              "version": "7.53.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.1",
              "status": "affected",
              "version": "7.52.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.0",
              "status": "affected",
              "version": "7.52.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.51.0",
              "status": "affected",
              "version": "7.51.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.3",
              "status": "affected",
              "version": "7.50.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.2",
              "status": "affected",
              "version": "7.50.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.1",
              "status": "affected",
              "version": "7.50.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.0",
              "status": "affected",
              "version": "7.50.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.1",
              "status": "affected",
              "version": "7.49.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.0",
              "status": "affected",
              "version": "7.49.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.48.0",
              "status": "affected",
              "version": "7.48.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.1",
              "status": "affected",
              "version": "7.47.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.0",
              "status": "affected",
              "version": "7.47.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.46.0",
              "status": "affected",
              "version": "7.46.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.45.0",
              "status": "affected",
              "version": "7.45.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.44.0",
              "status": "affected",
              "version": "7.44.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.43.0",
              "status": "affected",
              "version": "7.43.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Muhamad Arga Reksapati"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl might in some circumstances reuse the wrong connection when asked to\ndo Negotiate-authenticated ones, even when they are set to use different\n\u0027services\u0027.\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criteria must be met. Due to a logical\nerror in the code, a request that was issued by an application could\nwrongfully reuse an existing connection to the same server that was\nauthenticated using different services."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-488 Exposure of Data Element to Wrong Session",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:14:42.258Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8458.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8458.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3721183"
        }
      ],
      "title": "wrong reuse for different services"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8458",
    "datePublished": "2026-07-03T06:14:42.258Z",
    "dateReserved": "2026-05-13T08:33:36.632Z",
    "dateUpdated": "2026-07-03T06:14:42.258Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-8286 (GCVE-0-2026-8286)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:14 – Updated: 2026-07-03 06:14
VLAI?
Title
wrong STARTTLS connection reuse
Summary
A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Create a notification for this product.
Credits
Andrew Nesbitt (powered by Mythos) Stefan Eissing
Show details on NVD website

{
  "containers": {
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              "lessThanOrEqual": "8.0.0",
              "status": "affected",
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            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
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            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
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              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
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              "lessThanOrEqual": "7.79.1",
              "status": "affected",
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              "lessThanOrEqual": "7.79.0",
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              "lessThanOrEqual": "7.77.0",
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              "lessThanOrEqual": "7.66.0",
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              "lessThanOrEqual": "7.65.3",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.58.0",
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.54.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.53.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "7.52.0",
              "versionType": "semver"
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            {
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              "status": "affected",
              "version": "7.51.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
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          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Andrew Nesbitt (powered by Mythos)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability exists where a new transfer that uses STARTTLS to upgrade the\nconnection might reuse an existing live connection even though the TLS\nconfiguration mismatches so it should not."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:14:17.541Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-8286.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-8286.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3718195"
        }
      ],
      "title": "wrong STARTTLS connection reuse"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-8286",
    "datePublished": "2026-07-03T06:14:17.541Z",
    "dateReserved": "2026-05-11T07:06:37.906Z",
    "dateUpdated": "2026-07-03T06:14:17.541Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-12064 (GCVE-0-2026-12064)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:13 – Updated: 2026-07-03 06:13
VLAI?
Title
proto-default skips SSH verification
Summary
When a user invokes curl using a schemeless URL combined with `--proto-default` sftp (or scp), a disconnect occurs between the tool layer and libcurl. The tool layer incorrectly infers the URL scheme, which erroneously bypasses the initialization of critical SSH security options like CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 and CURLOPT_SSH_KNOWNHOSTS. Conversely, the libcurl runtime successfully honors CURLOPT_DEFAULT_PROTOCOL and establishes the connection via SFTP/SCP as specified. Because the tool layer skipped the security configuration, these SSH host verification options are silently omitted, causing curl to connect to an unverified SSH remote host without throwing an error.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Create a notification for this product.
Credits
alienowo on hackerone (AntAISecurityLab) Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.0",
              "status": "affected",
              "version": "8.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.6.0",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.5.0",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.3.0",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.1",
              "status": "affected",
              "version": "8.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.0",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.2",
              "status": "affected",
              "version": "8.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.1",
              "status": "affected",
              "version": "8.1.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.0",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.1",
              "status": "affected",
              "version": "8.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.0",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "alienowo on hackerone (AntAISecurityLab)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When a user invokes curl using a schemeless URL combined with\n`--proto-default` sftp (or scp), a disconnect occurs between the tool layer\nand libcurl. The tool layer incorrectly infers the URL scheme, which\nerroneously bypasses the initialization of critical SSH security options like\nCURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 and CURLOPT_SSH_KNOWNHOSTS. Conversely, the\nlibcurl runtime successfully honors CURLOPT_DEFAULT_PROTOCOL and establishes\nthe connection via SFTP/SCP as specified. Because the tool layer skipped the\nsecurity configuration, these SSH host verification options are silently\nomitted, causing curl to connect to an unverified SSH remote host without\nthrowing an error."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-297 Improper Validation of Certificate with Host Mismatch",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:13:55.302Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-12064.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-12064.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3797526"
        }
      ],
      "title": "proto-default skips SSH verification"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-12064",
    "datePublished": "2026-07-03T06:13:55.302Z",
    "dateReserved": "2026-06-12T07:23:29.455Z",
    "dateUpdated": "2026-07-03T06:13:55.302Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-11856 (GCVE-0-2026-11856)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:13 – Updated: 2026-07-03 06:13
VLAI?
Title
cross-origin Digest auth state leak
Summary
Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Affected: 7.11.2 , ≤ 7.11.2 (semver)
Affected: 7.11.1 , ≤ 7.11.1 (semver)
Affected: 7.11.0 , ≤ 7.11.0 (semver)
Affected: 7.10.8 , ≤ 7.10.8 (semver)
Affected: 7.10.7 , ≤ 7.10.7 (semver)
Affected: 7.10.6 , ≤ 7.10.6 (semver)
Create a notification for this product.
Credits
jjchuck on hackerone Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
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            {
              "lessThanOrEqual": "7.16.4",
              "status": "affected",
              "version": "7.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.3",
              "status": "affected",
              "version": "7.16.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.2",
              "status": "affected",
              "version": "7.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.1",
              "status": "affected",
              "version": "7.16.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.16.0",
              "status": "affected",
              "version": "7.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.5",
              "status": "affected",
              "version": "7.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.4",
              "status": "affected",
              "version": "7.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.3",
              "status": "affected",
              "version": "7.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.2",
              "status": "affected",
              "version": "7.15.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.1",
              "status": "affected",
              "version": "7.15.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.15.0",
              "status": "affected",
              "version": "7.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.14.1",
              "status": "affected",
              "version": "7.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.14.0",
              "status": "affected",
              "version": "7.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.2",
              "status": "affected",
              "version": "7.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.1",
              "status": "affected",
              "version": "7.13.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.13.0",
              "status": "affected",
              "version": "7.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.3",
              "status": "affected",
              "version": "7.12.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.2",
              "status": "affected",
              "version": "7.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.1",
              "status": "affected",
              "version": "7.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.12.0",
              "status": "affected",
              "version": "7.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.11.2",
              "status": "affected",
              "version": "7.11.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.11.1",
              "status": "affected",
              "version": "7.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.11.0",
              "status": "affected",
              "version": "7.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.8",
              "status": "affected",
              "version": "7.10.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.7",
              "status": "affected",
              "version": "7.10.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.10.6",
              "status": "affected",
              "version": "7.10.6",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "jjchuck on hackerone"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Successfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the  `Authorization:` header field meant for `hostA`,\nto `hostB`."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-294 Authentication Bypass by Capture-replay",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:13:31.661Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-11856.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-11856.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3793260"
        }
      ],
      "title": "cross-origin Digest auth state leak"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-11856",
    "datePublished": "2026-07-03T06:13:31.661Z",
    "dateReserved": "2026-06-10T08:59:16.646Z",
    "dateUpdated": "2026-07-03T06:13:31.661Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-11586 (GCVE-0-2026-11586)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:13 – Updated: 2026-07-03 06:13
VLAI?
Title
WS Auto-PONG memory exhaustion
Summary
By default, curl automatically responds to WebSocket PING frames. Because curl lacks an upper bound on memory allocation for unacknowledged frames, a malicious server can exhaust all available memory by flooding curl with rapid, sequential PING messages.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Create a notification for this product.
Credits
evergarden1123 on hackerone (AntAISecurityLab) Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "evergarden1123 on hackerone (AntAISecurityLab)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "By default, curl automatically responds to WebSocket PING frames. Because curl\nlacks an upper bound on memory allocation for unacknowledged frames, a\nmalicious server can exhaust all available memory by flooding curl with rapid,\nsequential PING messages."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:13:04.448Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-11586.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-11586.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3788931"
        }
      ],
      "title": "WS Auto-PONG memory exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-11586",
    "datePublished": "2026-07-03T06:13:04.448Z",
    "dateReserved": "2026-06-08T12:17:42.037Z",
    "dateUpdated": "2026-07-03T06:13:04.448Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-11564 (GCVE-0-2026-11564)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:12 – Updated: 2026-07-03 06:12
VLAI?
Title
Native CA trust persist
Summary
libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same handle to custom CA material for a later transfer.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Create a notification for this product.
Credits
Filipe Casal of Trail of Bits in collaboration with OpenAI Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Filipe Casal of Trail of Bits in collaboration with OpenAI"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl keeps previously used connections in a connection pool for subsequent\ntransfers to reuse if one of them matches the setup.\n\nAn easy handle that first uses default native CA trust can continue trusting\nthe native platform store after the application switches that same handle to\ncustom CA material for a later transfer."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:12:35.251Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-11564.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-11564.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3788984"
        }
      ],
      "title": "Native CA trust persist"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-11564",
    "datePublished": "2026-07-03T06:12:35.251Z",
    "dateReserved": "2026-06-08T08:22:50.089Z",
    "dateUpdated": "2026-07-03T06:12:35.251Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-11352 (GCVE-0-2026-11352)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:12 – Updated: 2026-07-03 06:12
VLAI?
Title
QUIC zero-length UDP datagrams busy-loop
Summary
An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can continuously stream empty datagrams to indefinitely stall the client.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Create a notification for this product.
Credits
vectorqueue on hackerone (AntAISecurityLab) Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "vectorqueue on hackerone (AntAISecurityLab)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue in curl\u2019s QUIC UDP receive function allows a malicious HTTP/3 server\nto trigger a remote denial of service against a curl or libcurl client.\nBecause the helper function discards zero-length UDP datagrams before counting\nthem toward the per-call packet budget, a connected QUIC peer can continuously\nstream empty datagrams to indefinitely stall the client."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T06:12:10.777Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-11352.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-11352.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3783438"
        }
      ],
      "title": "QUIC zero-length UDP datagrams busy-loop"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-11352",
    "datePublished": "2026-07-03T06:12:10.777Z",
    "dateReserved": "2026-06-05T11:23:43.389Z",
    "dateUpdated": "2026-07-03T06:12:10.777Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-10536 (GCVE-0-2026-10536)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:11 – Updated: 2026-07-03 06:11
VLAI?
Title
HTTP/2 stream-dependency tree UAF
Summary
A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or `CURLOPT_STREAM_DEPENDS_E`, subsequently invokes `curl_easy_reset()`, and finally terminates the handle with `curl_easy_cleanup()`. During this final cleanup phase, libcurl attempts to access and modify an internal structure that was already freed during the reset operation.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.20.0 , ≤ 8.20.0 (semver)
Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Stefan Eissing
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.20.0",
              "status": "affected",
              "version": "8.20.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
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              "lessThanOrEqual": "8.7.0",
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              "version": "8.7.0",
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              "lessThanOrEqual": "8.6.0",
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              "version": "8.6.0",
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              "lessThanOrEqual": "8.5.0",
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              "lessThanOrEqual": "8.4.0",
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CVE-2026-7168 (GCVE-0-2026-7168)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:29 – Updated: 2026-06-23 16:12
VLAI?
Title
cross-proxy Digest auth state leak
Summary
Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and then changing the proxy host to a second one (`proxyB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Proxy-Authorization:` header field meant for `proxyA`, to `proxyB`.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Create a notification for this product.
Credits
Muhamad Arga Reksapati Daniel Stenberg
Show details on NVD website

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      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Muhamad Arga Reksapati"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Successfully using libcurl to do a transfer over a specific HTTP proxy\n(`proxyA`) with **Digest** authentication and then changing the proxy host to\na second one (`proxyB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Proxy-Authorization:` header field meant for\n`proxyA`, to `proxyB`."
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              "lang": "en"
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      "providerMetadata": {
        "dateUpdated": "2026-05-13T08:29:08.900Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
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        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-7168.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-7168.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3697719"
        }
      ],
      "title": "cross-proxy Digest auth state leak"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "curl",
    "cveId": "CVE-2026-7168",
    "datePublished": "2026-05-13T08:29:08.900Z",
    "dateReserved": "2026-04-27T07:37:37.172Z",
    "dateUpdated": "2026-06-23T16:12:24.400Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-7009 (GCVE-0-2026-7009)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:28 – Updated: 2026-05-13 14:20
VLAI?
Title
OCSP stapling bypass with Apple SecTrust
Summary
When curl is told to use the Certificate Status Request TLS extension, often referred to as *OCSP stapling*, to verify that the server certificate is valid, it fails to detect OCSP problems and instead wrongly consider the response as fine.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Create a notification for this product.
Credits
Carlos Carrillo Stefan Eissing
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-05-13T09:05:48.665Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/04/29/12"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-7009",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T14:20:11.436717Z",
                "version": "2.0.3"
              },
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-13T14:20:33.908Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          {
            "tags": [
              "exploit"
            ],
            "url": "https://hackerone.com/reports/3694390"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
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              "status": "affected",
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            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            }
          ]
        }
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      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Carlos Carrillo"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Stefan Eissing"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When curl is told to use the Certificate Status Request TLS extension, often\nreferred to as *OCSP stapling*, to verify that the server certificate is\nvalid, it fails to detect OCSP problems and instead wrongly consider the\nresponse as fine."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-13T08:28:53.697Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
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        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3694390"
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      ],
      "title": "OCSP stapling bypass with Apple SecTrust"
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  },
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    "datePublished": "2026-05-13T08:28:53.697Z",
    "dateReserved": "2026-04-25T08:37:24.989Z",
    "dateUpdated": "2026-05-13T14:20:33.908Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

CVE-2026-6429 (GCVE-0-2026-6429)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:28 – Updated: 2026-05-13 14:03
VLAI?
Title
netrc credential leak with reused proxy connection
Summary
When asked to both use a `.netrc` file for credentials and to follow HTTP redirects, libcurl could leak the password used for the first host to the followed-to host under certain circumstances.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Create a notification for this product.
Credits
Muhamad Arga Reksapati Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-6429",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T14:03:52.312824Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-13T14:03:55.343Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "curl",
          "vendor": "curl",
          "versions": [
            {
              "lessThanOrEqual": "8.19.0",
              "status": "affected",
              "version": "8.19.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.18.0",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.17.0",
              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.0",
              "status": "affected",
              "version": "8.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.6.0",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.5.0",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.3.0",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.1",
              "status": "affected",
              "version": "8.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.0",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.2",
              "status": "affected",
              "version": "8.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.1",
              "status": "affected",
              "version": "8.1.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.0",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.1",
              "status": "affected",
              "version": "8.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.0",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.1",
              "status": "affected",
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            {
              "lessThanOrEqual": "7.72.0",
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            {
              "lessThanOrEqual": "7.71.1",
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            {
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            {
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              "version": "7.66.0",
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              "lessThanOrEqual": "7.65.2",
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            {
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            {
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            {
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              "versionType": "semver"
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          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Muhamad Arga Reksapati"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When asked to both use a `.netrc` file for credentials and to follow HTTP\nredirects, libcurl could leak the password used for the first host to the\nfollowed-to host under certain circumstances."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-13T08:28:36.166Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-6429.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-6429.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3677759"
        }
      ],
      "title": "netrc credential leak with reused proxy connection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-6429",
    "datePublished": "2026-05-13T08:28:36.166Z",
    "dateReserved": "2026-04-16T14:48:02.991Z",
    "dateUpdated": "2026-05-13T14:03:55.343Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-6276 (GCVE-0-2026-6276)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:28 – Updated: 2026-05-13 17:26
VLAI?
Title
stale custom cookie host causes cookie leak
Summary
Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Create a notification for this product.
Credits
Muhamad Arga Reksapati Daniel Stenberg
Show details on NVD website

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        "metrics": [
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              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          "product": "curl",
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              "lessThanOrEqual": "8.18.0",
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              "version": "8.18.0",
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              "status": "affected",
              "version": "8.17.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.16.0",
              "status": "affected",
              "version": "8.16.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.15.0",
              "status": "affected",
              "version": "8.15.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.1",
              "status": "affected",
              "version": "8.14.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.14.0",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.13.0",
              "status": "affected",
              "version": "8.13.0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "8.12.1",
              "status": "affected",
              "version": "8.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.12.0",
              "status": "affected",
              "version": "8.12.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.1",
              "status": "affected",
              "version": "8.11.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.11.0",
              "status": "affected",
              "version": "8.11.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.1",
              "status": "affected",
              "version": "8.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.10.0",
              "status": "affected",
              "version": "8.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.1",
              "status": "affected",
              "version": "8.9.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.9.0",
              "status": "affected",
              "version": "8.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.8.0",
              "status": "affected",
              "version": "8.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.1",
              "status": "affected",
              "version": "8.7.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.7.0",
              "status": "affected",
              "version": "8.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.6.0",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.5.0",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.4.0",
              "status": "affected",
              "version": "8.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.3.0",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.1",
              "status": "affected",
              "version": "8.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.0",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.2",
              "status": "affected",
              "version": "8.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.1",
              "status": "affected",
              "version": "8.1.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.1.0",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.1",
              "status": "affected",
              "version": "8.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.0",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.1",
              "status": "affected",
              "version": "7.88.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.88.0",
              "status": "affected",
              "version": "7.88.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.87.0",
              "status": "affected",
              "version": "7.87.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.86.0",
              "status": "affected",
              "version": "7.86.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.85.0",
              "status": "affected",
              "version": "7.85.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.84.0",
              "status": "affected",
              "version": "7.84.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.1",
              "status": "affected",
              "version": "7.83.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.83.0",
              "status": "affected",
              "version": "7.83.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.82.0",
              "status": "affected",
              "version": "7.82.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.1",
              "status": "affected",
              "version": "7.79.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.0",
              "status": "affected",
              "version": "7.79.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.78.0",
              "status": "affected",
              "version": "7.78.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.77.0",
              "status": "affected",
              "version": "7.77.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.1",
              "status": "affected",
              "version": "7.76.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.0",
              "status": "affected",
              "version": "7.76.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.75.0",
              "status": "affected",
              "version": "7.75.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.74.0",
              "status": "affected",
              "version": "7.74.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.73.0",
              "status": "affected",
              "version": "7.73.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.72.0",
              "status": "affected",
              "version": "7.72.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.71.1",
              "status": "affected",
              "version": "7.71.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.71.0",
              "status": "affected",
              "version": "7.71.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Muhamad Arga Reksapati"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Using libcurl, when a custom `Host:` header is first set for an HTTP request\nand a second request is subsequently done using the same *easy handle* but\nwithout the custom `Host:` header set, the second request would use stale\ninformation and pass on cookies meant for the first host in the second\nrequest. Leak them."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-346 Origin Validation Error",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-13T08:28:19.273Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-6276.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-6276.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3671818"
        }
      ],
      "title": "stale custom cookie host causes cookie leak"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-6276",
    "datePublished": "2026-05-13T08:28:19.273Z",
    "dateReserved": "2026-04-14T14:01:54.772Z",
    "dateUpdated": "2026-05-13T17:26:06.894Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-6253 (GCVE-0-2026-6253)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:28 – Updated: 2026-05-13 17:42
VLAI?
Title
proxy credentials leak over redirect-to proxy
Summary
curl might erroneously pass on credentials for a first proxy to a second proxy. This can happen when the following conditions are true: 1. curl is setup to use specific different proxies for different URL schemes 2. the first proxy needs credentials 3. the second proxy uses no credentials 4. while using the first proxy (using say `http://`), curl is asked to follow a redirect to a URL using another scheme (say `https://`), accessed using a second, different, proxy
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Create a notification for this product.
Credits
Dwij Mehta (O2 Lab Texas A&M University) Daniel Stenberg
Show details on NVD website

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          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/04/29/11"
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        "title": "CVE Program Container"
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      {
        "metrics": [
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            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
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              "content": {
                "id": "CVE-2026-6253",
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                  {
                    "Automatable": "no"
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                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
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              "lessThanOrEqual": "7.19.2",
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              "lessThanOrEqual": "7.19.1",
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      "credits": [
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          "type": "finder",
          "value": "Dwij Mehta (O2 Lab"
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          "lang": "en",
          "type": "finder",
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CVE-2026-5773 (GCVE-0-2026-5773)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:27 – Updated: 2026-05-13 17:45
VLAI?
Title
wrong reuse of SMB connection
Summary
libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a network transfer operation that was requested by an application could wrongfully reuse an existing SMB connection to the same server that was using a different 'share' than the new subsequent transfer should. This could in unlucky situations lead to the download of the wrong file or the upload of a file to the wrong place. When this happens, the same credentials are used and the server name is the same.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Create a notification for this product.
Credits
Osama Hamad Daniel Stenberg
Show details on NVD website

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            },
            {
              "lessThanOrEqual": "7.81.0",
              "status": "affected",
              "version": "7.81.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.80.0",
              "status": "affected",
              "version": "7.80.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.1",
              "status": "affected",
              "version": "7.79.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.79.0",
              "status": "affected",
              "version": "7.79.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.78.0",
              "status": "affected",
              "version": "7.78.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.77.0",
              "status": "affected",
              "version": "7.77.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.1",
              "status": "affected",
              "version": "7.76.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.76.0",
              "status": "affected",
              "version": "7.76.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.75.0",
              "status": "affected",
              "version": "7.75.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.74.0",
              "status": "affected",
              "version": "7.74.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.73.0",
              "status": "affected",
              "version": "7.73.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.72.0",
              "status": "affected",
              "version": "7.72.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.71.1",
              "status": "affected",
              "version": "7.71.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.71.0",
              "status": "affected",
              "version": "7.71.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.70.0",
              "status": "affected",
              "version": "7.70.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.69.1",
              "status": "affected",
              "version": "7.69.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.69.0",
              "status": "affected",
              "version": "7.69.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.68.0",
              "status": "affected",
              "version": "7.68.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.67.0",
              "status": "affected",
              "version": "7.67.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.66.0",
              "status": "affected",
              "version": "7.66.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.3",
              "status": "affected",
              "version": "7.65.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.2",
              "status": "affected",
              "version": "7.65.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.1",
              "status": "affected",
              "version": "7.65.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.0",
              "status": "affected",
              "version": "7.65.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.64.1",
              "status": "affected",
              "version": "7.64.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.64.0",
              "status": "affected",
              "version": "7.64.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.63.0",
              "status": "affected",
              "version": "7.63.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.62.0",
              "status": "affected",
              "version": "7.62.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.61.1",
              "status": "affected",
              "version": "7.61.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.61.0",
              "status": "affected",
              "version": "7.61.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.60.0",
              "status": "affected",
              "version": "7.60.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.59.0",
              "status": "affected",
              "version": "7.59.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.58.0",
              "status": "affected",
              "version": "7.58.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.57.0",
              "status": "affected",
              "version": "7.57.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.1",
              "status": "affected",
              "version": "7.56.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.0",
              "status": "affected",
              "version": "7.56.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.1",
              "status": "affected",
              "version": "7.55.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.0",
              "status": "affected",
              "version": "7.55.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.1",
              "status": "affected",
              "version": "7.54.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.0",
              "status": "affected",
              "version": "7.54.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.1",
              "status": "affected",
              "version": "7.53.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.0",
              "status": "affected",
              "version": "7.53.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.1",
              "status": "affected",
              "version": "7.52.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.0",
              "status": "affected",
              "version": "7.52.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.51.0",
              "status": "affected",
              "version": "7.51.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.3",
              "status": "affected",
              "version": "7.50.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.2",
              "status": "affected",
              "version": "7.50.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.1",
              "status": "affected",
              "version": "7.50.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.0",
              "status": "affected",
              "version": "7.50.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.1",
              "status": "affected",
              "version": "7.49.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.0",
              "status": "affected",
              "version": "7.49.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.48.0",
              "status": "affected",
              "version": "7.48.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.1",
              "status": "affected",
              "version": "7.47.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.0",
              "status": "affected",
              "version": "7.47.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.46.0",
              "status": "affected",
              "version": "7.46.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.45.0",
              "status": "affected",
              "version": "7.45.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.44.0",
              "status": "affected",
              "version": "7.44.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.43.0",
              "status": "affected",
              "version": "7.43.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.42.1",
              "status": "affected",
              "version": "7.42.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.42.0",
              "status": "affected",
              "version": "7.42.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.41.0",
              "status": "affected",
              "version": "7.41.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.40.0",
              "status": "affected",
              "version": "7.40.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Osama Hamad"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl might in some circumstances reuse the wrong connection for SMB(S)\ntransfers.\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criteria must be met. Due to a logical\nerror in the code, a network transfer operation that was requested by an\napplication could wrongfully reuse an existing SMB connection to the same\nserver that was using a different \u0027share\u0027 than the new subsequent transfer\nshould.\n\nThis could in unlucky situations lead to the download of the wrong file or the\nupload of a file to the wrong place. When this happens, the same credentials\nare used and the server name is the same."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-488 Exposure of Data Element to Wrong Session",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-13T08:27:42.342Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-5773.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-5773.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3650689"
        }
      ],
      "title": "wrong reuse of SMB connection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-5773",
    "datePublished": "2026-05-13T08:27:42.342Z",
    "dateReserved": "2026-04-08T06:51:05.356Z",
    "dateUpdated": "2026-05-13T17:45:08.173Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-5545 (GCVE-0-2026-5545)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:27 – Updated: 2026-05-13 17:46
VLAI?
Title
wrong reuse of HTTP Negotiate connection
Summary
libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. An application that first uses Negotiate authentication to a server with `user1:password1` and then does another operation to the same server asking for any authentication method but for `user2:password2` (while the previous connection is still alive) - the second request gets confused and wrongly reuses the same connection and sends the new request over that connection thinking it uses a mix of user1's and user2's credentials when it is in fact still using the connection authenticated for user1...
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Affected: 7.11.2 , ≤ 7.11.2 (semver)
Affected: 7.11.1 , ≤ 7.11.1 (semver)
Affected: 7.11.0 , ≤ 7.11.0 (semver)
Affected: 7.10.8 , ≤ 7.10.8 (semver)
Affected: 7.10.7 , ≤ 7.10.7 (semver)
Affected: 7.10.6 , ≤ 7.10.6 (semver)
Create a notification for this product.
Credits
Quac Tran and Ngoc Hieu Stefan Eissing
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-5545",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-13T17:46:36.115262Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-13T17:46:40.830Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://hackerone.com/reports/3642555"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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              "version": "7.16.1",
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              "status": "affected",
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CVE-2026-4873 (GCVE-0-2026-4873)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:27 – Updated: 2026-05-13 19:30
VLAI?
Title
connection reuse ignores TLS requirement
Summary
A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If an initial transfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request to that same host bypasses the TLS requirement and instead transmit data unencrypted.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.19.0 , ≤ 8.19.0 (semver)
Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Create a notification for this product.
Credits
Arkadi Vainbrand Daniel Stenberg
Show details on NVD website

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CVE-2026-3805 (GCVE-0-2026-3805)

Vulnerability from cvelistv5 – Published: 2026-03-11 10:09 – Updated: 2026-03-11 15:45
VLAI?
Title
use after free in SMB connection reuse
Summary
When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Create a notification for this product.
Credits
Daniel Wade Stefan Eissing
Show details on NVD website

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              "lessThanOrEqual": "8.15.0",
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        {
          "name": "issue",
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CVE-2026-3784 (GCVE-0-2026-3784)

Vulnerability from cvelistv5 – Published: 2026-03-11 10:09 – Updated: 2026-06-02 13:00
VLAI?
Title
wrong proxy connection reuse with credentials
Summary
curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Affected: 7.11.2 , ≤ 7.11.2 (semver)
Affected: 7.11.1 , ≤ 7.11.1 (semver)
Affected: 7.11.0 , ≤ 7.11.0 (semver)
Affected: 7.10.8 , ≤ 7.10.8 (semver)
Affected: 7.10.7 , ≤ 7.10.7 (semver)
Affected: 7.10.6 , ≤ 7.10.6 (semver)
Affected: 7.10.5 , ≤ 7.10.5 (semver)
Affected: 7.10.4 , ≤ 7.10.4 (semver)
Affected: 7.10.3 , ≤ 7.10.3 (semver)
Affected: 7.10.2 , ≤ 7.10.2 (semver)
Affected: 7.10.1 , ≤ 7.10.1 (semver)
Affected: 7.10 , ≤ 7.10 (semver)
Affected: 7.9.8 , ≤ 7.9.8 (semver)
Affected: 7.9.7 , ≤ 7.9.7 (semver)
Affected: 7.9.6 , ≤ 7.9.6 (semver)
Affected: 7.9.5 , ≤ 7.9.5 (semver)
Affected: 7.9.4 , ≤ 7.9.4 (semver)
Affected: 7.9.3 , ≤ 7.9.3 (semver)
Affected: 7.9.2 , ≤ 7.9.2 (semver)
Affected: 7.9.1 , ≤ 7.9.1 (semver)
Affected: 7.9 , ≤ 7.9 (semver)
Affected: 7.8.1 , ≤ 7.8.1 (semver)
Affected: 7.8 , ≤ 7.8 (semver)
Affected: 7.7.3 , ≤ 7.7.3 (semver)
Affected: 7.7.2 , ≤ 7.7.2 (semver)
Affected: 7.7.1 , ≤ 7.7.1 (semver)
Affected: 7.7 , ≤ 7.7 (semver)
Create a notification for this product.
Credits
Muhamad Arga Reksapati (HackerOne: nobcoder) Stefan Eissing
Show details on NVD website

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              "version": "7.9.8",
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              "lessThanOrEqual": "7.9.7",
              "status": "affected",
              "version": "7.9.7",
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              "lessThanOrEqual": "7.9.6",
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              "version": "7.9.6",
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              "lessThanOrEqual": "7.9.5",
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              "version": "7.9.4",
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              "lessThanOrEqual": "7.9.3",
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              "version": "7.9.3",
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              "lessThanOrEqual": "7.9.2",
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CVE-2026-3783 (GCVE-0-2026-3783)

Vulnerability from cvelistv5 – Published: 2026-03-11 10:09 – Updated: 2026-03-11 14:26
VLAI?
Title
token leak with redirect and netrc
Summary
When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with either of the `machine` or `default` keywords, curl would pass on the bearer token set for the first host also to the second one.
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Create a notification for this product.
Credits
spectreglobalsec on hackerone Daniel Stenberg
Show details on NVD website

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              "lessThanOrEqual": "7.65.3",
              "status": "affected",
              "version": "7.65.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.2",
              "status": "affected",
              "version": "7.65.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.1",
              "status": "affected",
              "version": "7.65.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.65.0",
              "status": "affected",
              "version": "7.65.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.64.1",
              "status": "affected",
              "version": "7.64.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.64.0",
              "status": "affected",
              "version": "7.64.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.63.0",
              "status": "affected",
              "version": "7.63.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.62.0",
              "status": "affected",
              "version": "7.62.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.61.1",
              "status": "affected",
              "version": "7.61.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.61.0",
              "status": "affected",
              "version": "7.61.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.60.0",
              "status": "affected",
              "version": "7.60.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.59.0",
              "status": "affected",
              "version": "7.59.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.58.0",
              "status": "affected",
              "version": "7.58.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.57.0",
              "status": "affected",
              "version": "7.57.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.1",
              "status": "affected",
              "version": "7.56.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.56.0",
              "status": "affected",
              "version": "7.56.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.1",
              "status": "affected",
              "version": "7.55.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.55.0",
              "status": "affected",
              "version": "7.55.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.1",
              "status": "affected",
              "version": "7.54.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.54.0",
              "status": "affected",
              "version": "7.54.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.1",
              "status": "affected",
              "version": "7.53.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.53.0",
              "status": "affected",
              "version": "7.53.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.1",
              "status": "affected",
              "version": "7.52.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.52.0",
              "status": "affected",
              "version": "7.52.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.51.0",
              "status": "affected",
              "version": "7.51.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.3",
              "status": "affected",
              "version": "7.50.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.2",
              "status": "affected",
              "version": "7.50.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.1",
              "status": "affected",
              "version": "7.50.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.50.0",
              "status": "affected",
              "version": "7.50.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.1",
              "status": "affected",
              "version": "7.49.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.49.0",
              "status": "affected",
              "version": "7.49.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.48.0",
              "status": "affected",
              "version": "7.48.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.1",
              "status": "affected",
              "version": "7.47.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.47.0",
              "status": "affected",
              "version": "7.47.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.46.0",
              "status": "affected",
              "version": "7.46.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.45.0",
              "status": "affected",
              "version": "7.45.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.44.0",
              "status": "affected",
              "version": "7.44.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.43.0",
              "status": "affected",
              "version": "7.43.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.42.1",
              "status": "affected",
              "version": "7.42.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.42.0",
              "status": "affected",
              "version": "7.42.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.41.0",
              "status": "affected",
              "version": "7.41.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.40.0",
              "status": "affected",
              "version": "7.40.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.39.0",
              "status": "affected",
              "version": "7.39.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.38.0",
              "status": "affected",
              "version": "7.38.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.37.1",
              "status": "affected",
              "version": "7.37.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.37.0",
              "status": "affected",
              "version": "7.37.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.36.0",
              "status": "affected",
              "version": "7.36.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.35.0",
              "status": "affected",
              "version": "7.35.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.34.0",
              "status": "affected",
              "version": "7.34.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.33.0",
              "status": "affected",
              "version": "7.33.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "spectreglobalsec on hackerone"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer\nperforms a redirect to a second URL, curl could leak that token to the second\nhostname under some circumstances.\n\nIf the hostname that the first request is redirected to has information in the\nused .netrc file, with either of the `machine` or `default` keywords, curl\nwould pass on the bearer token set for the first host also to the second one."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-522 Insufficiently Protected Credentials",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-11T10:09:08.746Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-3783.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-3783.html"
        },
        {
          "name": "issue",
          "url": "https://hackerone.com/reports/3583983"
        }
      ],
      "title": "token leak with redirect and netrc"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-3783",
    "datePublished": "2026-03-11T10:09:08.746Z",
    "dateReserved": "2026-03-08T05:09:09.891Z",
    "dateUpdated": "2026-03-11T14:26:10.788Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-1965 (GCVE-0-2026-1965)

Vulnerability from cvelistv5 – Published: 2026-03-11 10:08 – Updated: 2026-03-11 14:32
VLAI?
Title
bad reuse of HTTP Negotiate connection
Summary
libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criterion must first be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. One underlying reason being that Negotiate sometimes authenticates *connections* and not *requests*, contrary to how HTTP is designed to work. An application that allows Negotiate authentication to a server (that responds wanting Negotiate) with `user1:password1` and then does another operation to the same server also using Negotiate but with `user2:password2` (while the previous connection is still alive) - the second request wrongly reused the same connection and since it then sees that the Negotiate negotiation is already made, it just sends the request over that connection thinking it uses the user2 credentials when it is in fact still using the connection authenticated for user1... The set of authentication methods to use is set with `CURLOPT_HTTPAUTH`. Applications can disable libcurl's reuse of connections and thus mitigate this problem, by using one of the following libcurl options to alter how connections are or are not reused: `CURLOPT_FRESH_CONNECT`, `CURLOPT_MAXCONNECTS` and `CURLMOPT_MAX_HOST_CONNECTIONS` (if using the curl_multi API).
Assigner
Impacted products
Vendor Product Version
curl curl Affected: 8.18.0 , ≤ 8.18.0 (semver)
Affected: 8.17.0 , ≤ 8.17.0 (semver)
Affected: 8.16.0 , ≤ 8.16.0 (semver)
Affected: 8.15.0 , ≤ 8.15.0 (semver)
Affected: 8.14.1 , ≤ 8.14.1 (semver)
Affected: 8.14.0 , ≤ 8.14.0 (semver)
Affected: 8.13.0 , ≤ 8.13.0 (semver)
Affected: 8.12.1 , ≤ 8.12.1 (semver)
Affected: 8.12.0 , ≤ 8.12.0 (semver)
Affected: 8.11.1 , ≤ 8.11.1 (semver)
Affected: 8.11.0 , ≤ 8.11.0 (semver)
Affected: 8.10.1 , ≤ 8.10.1 (semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver)
Affected: 8.9.1 , ≤ 8.9.1 (semver)
Affected: 8.9.0 , ≤ 8.9.0 (semver)
Affected: 8.8.0 , ≤ 8.8.0 (semver)
Affected: 8.7.1 , ≤ 8.7.1 (semver)
Affected: 8.7.0 , ≤ 8.7.0 (semver)
Affected: 8.6.0 , ≤ 8.6.0 (semver)
Affected: 8.5.0 , ≤ 8.5.0 (semver)
Affected: 8.4.0 , ≤ 8.4.0 (semver)
Affected: 8.3.0 , ≤ 8.3.0 (semver)
Affected: 8.2.1 , ≤ 8.2.1 (semver)
Affected: 8.2.0 , ≤ 8.2.0 (semver)
Affected: 8.1.2 , ≤ 8.1.2 (semver)
Affected: 8.1.1 , ≤ 8.1.1 (semver)
Affected: 8.1.0 , ≤ 8.1.0 (semver)
Affected: 8.0.1 , ≤ 8.0.1 (semver)
Affected: 8.0.0 , ≤ 8.0.0 (semver)
Affected: 7.88.1 , ≤ 7.88.1 (semver)
Affected: 7.88.0 , ≤ 7.88.0 (semver)
Affected: 7.87.0 , ≤ 7.87.0 (semver)
Affected: 7.86.0 , ≤ 7.86.0 (semver)
Affected: 7.85.0 , ≤ 7.85.0 (semver)
Affected: 7.84.0 , ≤ 7.84.0 (semver)
Affected: 7.83.1 , ≤ 7.83.1 (semver)
Affected: 7.83.0 , ≤ 7.83.0 (semver)
Affected: 7.82.0 , ≤ 7.82.0 (semver)
Affected: 7.81.0 , ≤ 7.81.0 (semver)
Affected: 7.80.0 , ≤ 7.80.0 (semver)
Affected: 7.79.1 , ≤ 7.79.1 (semver)
Affected: 7.79.0 , ≤ 7.79.0 (semver)
Affected: 7.78.0 , ≤ 7.78.0 (semver)
Affected: 7.77.0 , ≤ 7.77.0 (semver)
Affected: 7.76.1 , ≤ 7.76.1 (semver)
Affected: 7.76.0 , ≤ 7.76.0 (semver)
Affected: 7.75.0 , ≤ 7.75.0 (semver)
Affected: 7.74.0 , ≤ 7.74.0 (semver)
Affected: 7.73.0 , ≤ 7.73.0 (semver)
Affected: 7.72.0 , ≤ 7.72.0 (semver)
Affected: 7.71.1 , ≤ 7.71.1 (semver)
Affected: 7.71.0 , ≤ 7.71.0 (semver)
Affected: 7.70.0 , ≤ 7.70.0 (semver)
Affected: 7.69.1 , ≤ 7.69.1 (semver)
Affected: 7.69.0 , ≤ 7.69.0 (semver)
Affected: 7.68.0 , ≤ 7.68.0 (semver)
Affected: 7.67.0 , ≤ 7.67.0 (semver)
Affected: 7.66.0 , ≤ 7.66.0 (semver)
Affected: 7.65.3 , ≤ 7.65.3 (semver)
Affected: 7.65.2 , ≤ 7.65.2 (semver)
Affected: 7.65.1 , ≤ 7.65.1 (semver)
Affected: 7.65.0 , ≤ 7.65.0 (semver)
Affected: 7.64.1 , ≤ 7.64.1 (semver)
Affected: 7.64.0 , ≤ 7.64.0 (semver)
Affected: 7.63.0 , ≤ 7.63.0 (semver)
Affected: 7.62.0 , ≤ 7.62.0 (semver)
Affected: 7.61.1 , ≤ 7.61.1 (semver)
Affected: 7.61.0 , ≤ 7.61.0 (semver)
Affected: 7.60.0 , ≤ 7.60.0 (semver)
Affected: 7.59.0 , ≤ 7.59.0 (semver)
Affected: 7.58.0 , ≤ 7.58.0 (semver)
Affected: 7.57.0 , ≤ 7.57.0 (semver)
Affected: 7.56.1 , ≤ 7.56.1 (semver)
Affected: 7.56.0 , ≤ 7.56.0 (semver)
Affected: 7.55.1 , ≤ 7.55.1 (semver)
Affected: 7.55.0 , ≤ 7.55.0 (semver)
Affected: 7.54.1 , ≤ 7.54.1 (semver)
Affected: 7.54.0 , ≤ 7.54.0 (semver)
Affected: 7.53.1 , ≤ 7.53.1 (semver)
Affected: 7.53.0 , ≤ 7.53.0 (semver)
Affected: 7.52.1 , ≤ 7.52.1 (semver)
Affected: 7.52.0 , ≤ 7.52.0 (semver)
Affected: 7.51.0 , ≤ 7.51.0 (semver)
Affected: 7.50.3 , ≤ 7.50.3 (semver)
Affected: 7.50.2 , ≤ 7.50.2 (semver)
Affected: 7.50.1 , ≤ 7.50.1 (semver)
Affected: 7.50.0 , ≤ 7.50.0 (semver)
Affected: 7.49.1 , ≤ 7.49.1 (semver)
Affected: 7.49.0 , ≤ 7.49.0 (semver)
Affected: 7.48.0 , ≤ 7.48.0 (semver)
Affected: 7.47.1 , ≤ 7.47.1 (semver)
Affected: 7.47.0 , ≤ 7.47.0 (semver)
Affected: 7.46.0 , ≤ 7.46.0 (semver)
Affected: 7.45.0 , ≤ 7.45.0 (semver)
Affected: 7.44.0 , ≤ 7.44.0 (semver)
Affected: 7.43.0 , ≤ 7.43.0 (semver)
Affected: 7.42.1 , ≤ 7.42.1 (semver)
Affected: 7.42.0 , ≤ 7.42.0 (semver)
Affected: 7.41.0 , ≤ 7.41.0 (semver)
Affected: 7.40.0 , ≤ 7.40.0 (semver)
Affected: 7.39.0 , ≤ 7.39.0 (semver)
Affected: 7.38.0 , ≤ 7.38.0 (semver)
Affected: 7.37.1 , ≤ 7.37.1 (semver)
Affected: 7.37.0 , ≤ 7.37.0 (semver)
Affected: 7.36.0 , ≤ 7.36.0 (semver)
Affected: 7.35.0 , ≤ 7.35.0 (semver)
Affected: 7.34.0 , ≤ 7.34.0 (semver)
Affected: 7.33.0 , ≤ 7.33.0 (semver)
Affected: 7.32.0 , ≤ 7.32.0 (semver)
Affected: 7.31.0 , ≤ 7.31.0 (semver)
Affected: 7.30.0 , ≤ 7.30.0 (semver)
Affected: 7.29.0 , ≤ 7.29.0 (semver)
Affected: 7.28.1 , ≤ 7.28.1 (semver)
Affected: 7.28.0 , ≤ 7.28.0 (semver)
Affected: 7.27.0 , ≤ 7.27.0 (semver)
Affected: 7.26.0 , ≤ 7.26.0 (semver)
Affected: 7.25.0 , ≤ 7.25.0 (semver)
Affected: 7.24.0 , ≤ 7.24.0 (semver)
Affected: 7.23.1 , ≤ 7.23.1 (semver)
Affected: 7.23.0 , ≤ 7.23.0 (semver)
Affected: 7.22.0 , ≤ 7.22.0 (semver)
Affected: 7.21.7 , ≤ 7.21.7 (semver)
Affected: 7.21.6 , ≤ 7.21.6 (semver)
Affected: 7.21.5 , ≤ 7.21.5 (semver)
Affected: 7.21.4 , ≤ 7.21.4 (semver)
Affected: 7.21.3 , ≤ 7.21.3 (semver)
Affected: 7.21.2 , ≤ 7.21.2 (semver)
Affected: 7.21.1 , ≤ 7.21.1 (semver)
Affected: 7.21.0 , ≤ 7.21.0 (semver)
Affected: 7.20.1 , ≤ 7.20.1 (semver)
Affected: 7.20.0 , ≤ 7.20.0 (semver)
Affected: 7.19.7 , ≤ 7.19.7 (semver)
Affected: 7.19.6 , ≤ 7.19.6 (semver)
Affected: 7.19.5 , ≤ 7.19.5 (semver)
Affected: 7.19.4 , ≤ 7.19.4 (semver)
Affected: 7.19.3 , ≤ 7.19.3 (semver)
Affected: 7.19.2 , ≤ 7.19.2 (semver)
Affected: 7.19.1 , ≤ 7.19.1 (semver)
Affected: 7.19.0 , ≤ 7.19.0 (semver)
Affected: 7.18.2 , ≤ 7.18.2 (semver)
Affected: 7.18.1 , ≤ 7.18.1 (semver)
Affected: 7.18.0 , ≤ 7.18.0 (semver)
Affected: 7.17.1 , ≤ 7.17.1 (semver)
Affected: 7.17.0 , ≤ 7.17.0 (semver)
Affected: 7.16.4 , ≤ 7.16.4 (semver)
Affected: 7.16.3 , ≤ 7.16.3 (semver)
Affected: 7.16.2 , ≤ 7.16.2 (semver)
Affected: 7.16.1 , ≤ 7.16.1 (semver)
Affected: 7.16.0 , ≤ 7.16.0 (semver)
Affected: 7.15.5 , ≤ 7.15.5 (semver)
Affected: 7.15.4 , ≤ 7.15.4 (semver)
Affected: 7.15.3 , ≤ 7.15.3 (semver)
Affected: 7.15.2 , ≤ 7.15.2 (semver)
Affected: 7.15.1 , ≤ 7.15.1 (semver)
Affected: 7.15.0 , ≤ 7.15.0 (semver)
Affected: 7.14.1 , ≤ 7.14.1 (semver)
Affected: 7.14.0 , ≤ 7.14.0 (semver)
Affected: 7.13.2 , ≤ 7.13.2 (semver)
Affected: 7.13.1 , ≤ 7.13.1 (semver)
Affected: 7.13.0 , ≤ 7.13.0 (semver)
Affected: 7.12.3 , ≤ 7.12.3 (semver)
Affected: 7.12.2 , ≤ 7.12.2 (semver)
Affected: 7.12.1 , ≤ 7.12.1 (semver)
Affected: 7.12.0 , ≤ 7.12.0 (semver)
Affected: 7.11.2 , ≤ 7.11.2 (semver)
Affected: 7.11.1 , ≤ 7.11.1 (semver)
Affected: 7.11.0 , ≤ 7.11.0 (semver)
Affected: 7.10.8 , ≤ 7.10.8 (semver)
Affected: 7.10.7 , ≤ 7.10.7 (semver)
Affected: 7.10.6 , ≤ 7.10.6 (semver)
Create a notification for this product.
Credits
Zhicheng Chen Daniel Stenberg
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-1965",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-11T14:31:56.061598Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-305",
                "description": "CWE-305 Authentication Bypass by Primary Weakness",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
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            {
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            {
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            {
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          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Zhicheng Chen"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Daniel Stenberg"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libcurl can in some circumstances reuse the wrong connection when asked to do\nan Negotiate-authenticated HTTP or HTTPS request.\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criterion must first be met. Due to a\nlogical error in the code, a request that was issued by an application could\nwrongfully reuse an existing connection to the same server that was\nauthenticated using different credentials. One underlying reason being that\nNegotiate sometimes authenticates *connections* and not *requests*, contrary\nto how HTTP is designed to work.\n\nAn application that allows Negotiate authentication to a server (that responds\nwanting Negotiate) with `user1:password1` and then does another operation to\nthe same server also using Negotiate but with `user2:password2` (while the\nprevious connection is still alive) - the second request wrongly reused the\nsame connection and since it then sees that the Negotiate negotiation is\nalready made, it just sends the request over that connection thinking it uses\nthe user2 credentials when it is in fact still using the connection\nauthenticated for user1...\n\nThe set of authentication methods to use is set with  `CURLOPT_HTTPAUTH`.\n\nApplications can disable libcurl\u0027s reuse of connections and thus mitigate this\nproblem, by using one of the following libcurl options to alter how\nconnections are or are not reused: `CURLOPT_FRESH_CONNECT`,\n`CURLOPT_MAXCONNECTS` and `CURLMOPT_MAX_HOST_CONNECTIONS` (if using the\ncurl_multi API)."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-305 Authentication Bypass by Primary Weakness",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-11T10:08:52.431Z",
        "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "shortName": "curl"
      },
      "references": [
        {
          "name": "json",
          "url": "https://curl.se/docs/CVE-2026-1965.json"
        },
        {
          "name": "www",
          "url": "https://curl.se/docs/CVE-2026-1965.html"
        }
      ],
      "title": "bad reuse of HTTP Negotiate connection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
    "assignerShortName": "curl",
    "cveId": "CVE-2026-1965",
    "datePublished": "2026-03-11T10:08:52.431Z",
    "dateReserved": "2026-02-05T11:00:50.882Z",
    "dateUpdated": "2026-03-11T14:32:38.895Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}