Vulnerability-Lookup

GHSA-QW64-3X98-G7Q2

Vulnerability from github – Published: 2026-05-14 18:25 – Updated: 2026-06-09 10:26

Summary

go-billy has path traversal vulnerabilities

Details

Impact

Multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories.

While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations.

The osfs.ChrootOS implementation is notably affected by this vulnerability and is now deprecated in v5, removed at v6. Users are recommended to move on to osfs.BoundOS instead: osfs.New(path, WithBoundOS()).

Users requiring stronger security boundary enforcement are recommended to upgrade to v6, where the osfs implementation are backed by the traversal-resistant primitive os.Root.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.

Credits

Thanks to @faran66 and @vnykmshr for finding and separately reporting this issue privately to the go-git project. 🙇

Severity ?

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-git/go-billy/v5"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-git/go-billy/v6"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.0-alpha.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44973"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-14T18:25:38Z",
    "nvd_published_at": "2026-05-28T22:16:59Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nMultiple path traversal issues exist across different components of `go-billy`. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using `..`) to escape intended base directories.\n\nWhile go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on `go-billy` for some level of isolation may inadvertently expose access to unintended filesystem locations.\n\nThe `osfs.ChrootOS` implementation is notably affected by this vulnerability and is now deprecated in `v5`, removed at `v6`. Users are recommended to move on to `osfs.BoundOS` instead: `osfs.New(path, WithBoundOS())`.\n\nUsers requiring stronger security boundary enforcement are recommended to upgrade to `v6`, where the `osfs` implementation are backed by the [traversal-resistant](https://go.dev/blog/osroot) primitive [os.Root](https://pkg.go.dev/os#Root).\n\n### Patches\nUsers should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to `v5` are likely to be affected, users are recommended to upgrade to a supported `go-billy` version.\n\n### Credits\nThanks to @faran66 and @vnykmshr for finding and separately reporting this issue privately to the go-git project. \ud83d\ude47",
  "id": "GHSA-qw64-3x98-g7q2",
  "modified": "2026-06-09T10:26:27Z",
  "published": "2026-05-14T18:25:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/go-git/go-billy/security/advisories/GHSA-qw64-3x98-g7q2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44973"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/go-git/go-billy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-git/go-billy/releases/tag/v5.9.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "go-billy has path traversal vulnerabilities"
}

GHSA-PJCQ-XVWQ-HHPJ

Vulnerability from github – Published: 2026-04-23 21:21 – Updated: 2026-04-27 16:35

Summary

go-ntlmssp NTLM challenges can panic on malformed payloads

Details

go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using ntlmssp.Negotiator as an HTTP transport. Version 0.1.1 patches the issue.

Severity ?

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/Azure/go-ntlmssp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-32952"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-23T21:21:58Z",
    "nvd_published_at": "2026-04-24T03:16:07Z",
    "severity": "MODERATE"
  },
  "details": "go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using `ntlmssp.Negotiator` as an HTTP transport. Version 0.1.1 patches the issue.",
  "id": "GHSA-pjcq-xvwq-hhpj",
  "modified": "2026-04-27T16:35:38Z",
  "published": "2026-04-23T21:21:58Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Azure/go-ntlmssp/security/advisories/GHSA-pjcq-xvwq-hhpj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32952"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Azure/go-ntlmssp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Azure/go-ntlmssp/releases/tag/v0.1.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "go-ntlmssp NTLM challenges can panic on malformed payloads"
}

GHSA-M3XC-H892-GGX6

Vulnerability from github – Published: 2026-05-13 15:29 – Updated: 2026-06-09 10:50

Summary

go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion

Details

Impact

Multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption.

These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-billy version.

Credits

Thanks to @faran66 for finding and reporting this issue privately to the go-git project. 🙇

Severity ?

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-git/go-billy/v5"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-git/go-billy/v6"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.0-alpha.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674",
      "CWE-835"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-13T15:29:47Z",
    "nvd_published_at": "2026-06-01T17:17:08Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nMultiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption.\n\nThese issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures.\n\n### Patches\nUsers should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to `v5` are likely to be affected, users are recommended to upgrade to a supported `go-billy` version.\n\n### Credits\nThanks to @faran66 for finding and reporting this issue privately to the go-git project. \ud83d\ude47",
  "id": "GHSA-m3xc-h892-ggx6",
  "modified": "2026-06-09T10:50:07Z",
  "published": "2026-05-13T15:29:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/go-git/go-billy/security/advisories/GHSA-m3xc-h892-ggx6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44740"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/go-git/go-billy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-git/go-billy/releases/tag/v5.9.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion"
}

GHSA-MH2Q-Q3FH-2475

Vulnerability from github – Published: 2026-04-07 20:12 – Updated: 2026-04-24 20:04

Summary

OpenTelemetry-Go: multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)

Details

multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. this allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit.

severity

HIGH (availability / remote request amplification)

relevant links

repository: https://github.com/open-telemetry/opentelemetry-go
pinned callsite: https://github.com/open-telemetry/opentelemetry-go/blob/1ee4a4126dbdd1bc79e9fae072fa488beffac52a/propagation/baggage.go#L58

vulnerability details

pins: open-telemetry/opentelemetry-go@1ee4a4126dbdd1bc79e9fae072fa488beffac52a as-of: 2026-02-04 policy: direct (no program scope provided)

callsite: propagation/baggage.go:58 (extractMultiBaggage) attacker control: inbound HTTP request headers (many baggage field-values) → propagation.HeaderCarrier.Values("baggage") → repeated baggage.Parse + member aggregation

root cause

extractMultiBaggage iterates over all baggage header field-values and parses each one independently, then appends members into a shared slice. the 8192-byte parsing cap applies per header value, but the multi-value path repeats that work once per header line (bounded only by the server/proxy header byte limit).

impact

in a default net/http configuration (max header bytes 1mb), a single request with many baggage: header field-values can cause large per-request allocations and increased latency.

example from the attached PoC harness (darwin/arm64; 80 values; 40 requests):

canonical: per_req_alloc_bytes=10315458 and p95_ms=7
control: per_req_alloc_bytes=133429 and p95_ms=0

proof of concept

canonical:

mkdir -p poc
unzip poc.zip -d poc
cd poc
make test

output (excerpt):

[CALLSITE_HIT]: propagation/baggage.go:58 extractMultiBaggage
[PROOF_MARKER]: baggage_multi_value_amplification p95_ms=7 per_req_alloc_bytes=10315458 per_req_allocs=16165

control:

cd poc
make control

control output (excerpt):

[NC_MARKER]: baggage_single_value_baseline p95_ms=0 per_req_alloc_bytes=133429 per_req_allocs=480

expected: multiple baggage header field-values should be semantically equivalent to a single comma-joined baggage value and should not multiply parsing/alloc work within the effective header byte budget. actual: multiple baggage header field-values trigger repeated parsing and member aggregation, causing high per-request allocations and increased latency even when each individual value is within 8192 bytes.

fix recommendation

avoid repeated parsing across multi-values by enforcing a global budget and/or normalizing multi-values into a single value before parsing. one mitigation approach is to treat multi-values as a single comma-joined string and cap total parsed bytes (for example 8192 bytes total).

fix accepted when: under the default PoC harness settings, canonical stays within 2x of control for per_req_alloc_bytes and per_req_allocs, and p95_ms stays below 2ms.

poc.zip PR_DESCRIPTION.md

Severity ?

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.40.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "go.opentelemetry.io/otel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.36.0"
            },
            {
              "fixed": "1.41.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-29181"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-07T20:12:57Z",
    "nvd_published_at": "2026-04-07T21:17:16Z",
    "severity": "HIGH"
  },
  "details": "multi-value `baggage:` header extraction parses each header field-value independently and aggregates members across values. this allows an attacker to amplify cpu and allocations by sending many `baggage:` header lines, even when each individual value is within the 8192-byte per-value parse limit.\n\n## severity\n\nHIGH (availability / remote request amplification)\n\n## relevant links\n\n- repository: https://github.com/open-telemetry/opentelemetry-go\n- pinned callsite: https://github.com/open-telemetry/opentelemetry-go/blob/1ee4a4126dbdd1bc79e9fae072fa488beffac52a/propagation/baggage.go#L58\n\n## vulnerability details\n\n**pins:** open-telemetry/opentelemetry-go@1ee4a4126dbdd1bc79e9fae072fa488beffac52a\n**as-of:** 2026-02-04\n**policy:** direct (no program scope provided)\n\n**callsite:** propagation/baggage.go:58 (`extractMultiBaggage`)\n**attacker control:** inbound HTTP request headers (many `baggage` field-values) \u2192 `propagation.HeaderCarrier.Values(\"baggage\")` \u2192 repeated `baggage.Parse` + member aggregation\n\n### root cause\n\n`extractMultiBaggage` iterates over all `baggage` header field-values and parses each one independently, then appends members into a shared slice. the 8192-byte parsing cap applies per header value, but the multi-value path repeats that work once per header line (bounded only by the server/proxy header byte limit).\n\n### impact\n\nin a default `net/http` configuration (max header bytes 1mb), a single request with many `baggage:` header field-values can cause large per-request allocations and increased latency.\n\nexample from the attached PoC harness (darwin/arm64; 80 values; 40 requests):\n\n- canonical: `per_req_alloc_bytes=10315458` and `p95_ms=7`\n- control: `per_req_alloc_bytes=133429` and `p95_ms=0`\n\n## proof of concept\n\ncanonical:\n\n```bash\nmkdir -p poc\nunzip poc.zip -d poc\ncd poc\nmake test\n```\n\noutput (excerpt):\n\n```\n[CALLSITE_HIT]: propagation/baggage.go:58 extractMultiBaggage\n[PROOF_MARKER]: baggage_multi_value_amplification p95_ms=7 per_req_alloc_bytes=10315458 per_req_allocs=16165\n```\n\ncontrol:\n\n```bash\ncd poc\nmake control\n```\n\ncontrol output (excerpt):\n\n```\n[NC_MARKER]: baggage_single_value_baseline p95_ms=0 per_req_alloc_bytes=133429 per_req_allocs=480\n```\n\n**expected:** multiple `baggage` header field-values should be semantically equivalent to a single comma-joined `baggage` value and should not multiply parsing/alloc work within the effective header byte budget.\n**actual:** multiple `baggage` header field-values trigger repeated parsing and member aggregation, causing high per-request allocations and increased latency even when each individual value is within 8192 bytes.\n\n## fix recommendation\n\navoid repeated parsing across multi-values by enforcing a global budget and/or normalizing multi-values into a single value before parsing. one mitigation approach is to treat multi-values as a single comma-joined string and cap total parsed bytes (for example 8192 bytes total).\n\n**fix accepted when:** under the default PoC harness settings, canonical stays within 2x of control for `per_req_alloc_bytes` and `per_req_allocs`, and `p95_ms` stays below 2ms.\n\n\n[poc.zip](https://github.com/user-attachments/files/25079945/poc.zip)\n[PR_DESCRIPTION.md](https://github.com/user-attachments/files/25079946/PR_DESCRIPTION.md)",
  "id": "GHSA-mh2q-q3fh-2475",
  "modified": "2026-04-24T20:04:24Z",
  "published": "2026-04-07T20:12:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29181"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-go/pull/7880"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-go/commit/aa1894e09e3fe66860c7885cb40f98901b35277f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/open-telemetry/opentelemetry-go"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.41.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenTelemetry-Go: multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)"
}

CVE-2026-39827 (GCVE-0-2026-39827)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 18:35

Title

Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh

Summary

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Go

References

URL

Tags

	https://go.dev/issue/35127
	https://go.dev/cl/781320
	https://groups.google.com/g/golang-announce/c/a08…
	https://pkg.go.dev/vuln/GO-2026-5016

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

Ziyan Zhou

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-39827",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-22T18:35:34.770589Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-22T18:35:40.472Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/crypto/ssh",
          "product": "golang.org/x/crypto/ssh",
          "programRoutines": [
            {
              "name": "channel.Reject"
            }
          ],
          "vendor": "golang.org/x/crypto",
          "versions": [
            {
              "lessThan": "0.52.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Ziyan Zhou"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection\u0027s internal state and released for garbage collection."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-401: Missing Release of Memory after Effective Lifetime",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-22T02:31:27.064Z",
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      "title": "Invoking  memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh"
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CVE-2026-33813 (GCVE-0-2026-33813)

Vulnerability from cvelistv5 – Published: 2026-04-21 19:21 – Updated: 2026-06-25 19:47

Title

Panic when decoding large WEBP image on 32-bit platforms in golang.org/x/image

Summary

Parsing a WEBP image with an invalid, large size panics on 32-bit platforms.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

Go

References

URL

Tags

	https://go.dev/cl/759860
	https://go.dev/cl/780860
	https://go.dev/issue/78407
	https://pkg.go.dev/vuln/GO-2026-4961

Impacted products

	Vendor	Product	Version
	golang.org/x/image	golang.org/x/image/webp	Affected: 0 , < 0.42.0 (semver)

Credits

Tristan Madani

Show details on NVD website

JSON

To clipboard

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CVE-2026-39834 (GCVE-0-2026-39834)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 18:50

Title

Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh

Summary

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79567
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781663
	https://pkg.go.dev/vuln/GO-2026-5020

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
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CVE-2026-42508 (GCVE-0-2026-42508)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:05

Title

Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts

Summary

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-295 - Improper Certificate Validation

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79568
	https://go.dev/cl/781220
	https://groups.google.com/g/golang-announce/c/a08…
	https://pkg.go.dev/vuln/GO-2026-5021

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh/knownhosts	Affected: 0 , < 0.52.0 (semver)

Show details on NVD website

JSON

To clipboard

{
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            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:26546"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:23262"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:23264"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:26547: Red Hat Advanced Cluster Security for Kubernetes 4.10"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:26546: Red Hat Advanced Cluster Security for Kubernetes 4.9"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:23262: Red Hat Hardened Images"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:23264: Red Hat Hardened Images"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-22T04:01:49.515Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-05-22T02:31:27.644Z",
            "value": "Made public."
          }
        ],
        "title": "golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey",
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/crypto/ssh/knownhosts",
          "product": "golang.org/x/crypto/ssh/knownhosts",
          "programRoutines": [
            {
              "name": "hostKeyDB.IsRevoked"
            }
          ],
          "vendor": "golang.org/x/crypto",
          "versions": [
            {
              "lessThan": "0.52.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Previously, a revoked \u0027SignatureKey\u0027 belonging to a CA was not correctly checked for revocation. Now, both the \u0027key\u0027 and \u0027key.SignatureKey\u0027 are checked for @revoked."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-22T02:31:27.644Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
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          "url": "https://go.dev/issue/79568"
        },
        {
          "url": "https://go.dev/cl/781220"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5021"
        }
      ],
      "title": "Invoking  auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-42508",
    "datePublished": "2026-05-22T02:31:27.644Z",
    "dateReserved": "2026-04-28T00:21:12.792Z",
    "dateUpdated": "2026-07-03T12:05:07.203Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-39817 (GCVE-0-2026-39817)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:29

Title

Invoking "go tool pack" does not sanitize output paths in cmd/go

Summary

The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the "pack" subcommand can write files to arbitrary locations on the filesystem.

Severity ?

5.9 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78778
	https://go.dev/cl/767520
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4979

Impacted products

	Vendor	Product	Version
	Go toolchain	cmd/go	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

Harshit Gupta (Mr HAX)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N",
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              "content": {
                "id": "CVE-2026-39817",
                "options": [
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                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-05-08T16:58:23.255142Z",
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          "dateUpdated": "2026-05-08T21:29:47.246Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "cmd/go",
          "product": "cmd/go",
          "vendor": "Go toolchain",
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            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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              "status": "affected",
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          "lang": "en",
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          "descriptions": [
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        },
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4979"
        }
      ],
      "title": "Invoking \"go tool pack\" does not sanitize output paths in cmd/go"
    }
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  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
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    "datePublished": "2026-05-07T19:41:18.993Z",
    "dateReserved": "2026-04-07T18:13:03.524Z",
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}

CVE-2026-39820 (GCVE-0-2026-39820)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-03 12:05

Title

Quadratic string concatentation in consumeComment in net/mail

Summary

Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78566
	https://go.dev/cl/759940
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4986

Impacted products

	Vendor	Product	Version
	Go standard library	net/mail	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

thatnealpatel

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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          },
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            "other": {
              "content": {
                "id": "CVE-2026-39820",
                "options": [
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                    "Exploitation": "none"
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                  },
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                    "Technical Impact": "partial"
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
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        "affected": [
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            "cpes": [
              "cpe:/a:redhat:logging:6.4::el9"
            ],
            "defaultStatus": "affected",
            "product": "Logging Subsystem for Red Hat OpenShift 6.4",
            "vendor": "Red Hat"
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            "cpes": [
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            "cpes": [
              "cpe:/a:redhat:assisted_installer:2"
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            "product": "Assisted Installer for Red Hat OpenShift Container Platform 2",
            "vendor": "Red Hat"
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            "cpes": [
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            "product": "cert-manager Operator for Red Hat OpenShift",
            "vendor": "Red Hat"
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            "vendor": "Red Hat"
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            "cpes": [
              "cpe:/a:redhat:cryostat:4"
            ],
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            "product": "Cryostat 4",
            "vendor": "Red Hat"
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          {
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              "cpe:/a:redhat:openshift_file_integrity_operator:1"
            ],
            "defaultStatus": "affected",
            "product": "File Integrity Operator",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:lvms:4"
            ],
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            "product": "Logical Volume Manager Storage",
            "vendor": "Red Hat"
          },
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            "cpes": [
              "cpe:/a:redhat:migration_toolkit_applications:8"
            ],
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            "vendor": "Red Hat"
          },
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              "cpe:/a:redhat:rhmt:1"
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            "vendor": "Red Hat"
          },
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            "cpes": [
              "cpe:/a:redhat:multiarch_tuning_operator"
            ],
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            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:network_observ_optr:1"
            ],
            "defaultStatus": "affected",
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            "vendor": "Red Hat"
          },
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            "cpes": [
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            "vendor": "Red Hat"
          },
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              "cpe:/a:redhat:ocp_tools"
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            "vendor": "Red Hat"
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            "cpes": [
              "cpe:/a:redhat:openshift_lightspeed"
            ],
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            "product": "OpenShift Lightspeed",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
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            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:serverless:1"
            ],
            "defaultStatus": "affected",
            "product": "OpenShift Serverless",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:service_mesh:2"
            ],
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            "vendor": "Red Hat"
          },
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            "vendor": "Red Hat"
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            ],
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            "vendor": "Red Hat"
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            ],
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            "vendor": "Red Hat"
          },
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            ],
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            "vendor": "Red Hat"
          },
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            ],
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            "product": "Red Hat Hardened Images",
            "vendor": "Red Hat"
          },
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            "cpes": [
              "cpe:/a:redhat:openshift_ai"
            ],
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            "product": "Red Hat OpenShift AI (RHOAI)",
            "vendor": "Red Hat"
          },
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              "cpe:/a:redhat:openshift_cluster_manager_cli:1"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Cluster Manager CLI",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4"
            ],
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            "product": "Red Hat OpenShift Container Platform 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
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            ],
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            "product": "Red Hat Openshift Data Foundation 4",
            "vendor": "Red Hat"
          },
          {
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            "product": "Red Hat OpenShift Dev Spaces",
            "vendor": "Red Hat"
          },
          {
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            ],
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            "product": "Red Hat OpenShift Dev Workspaces Operator",
            "vendor": "Red Hat"
          },
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            ],
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            "product": "Red Hat OpenShift distributed tracing 3",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:windows_machine_config"
            ],
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            "product": "Red Hat OpenShift for Windows Containers",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
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            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift GitOps",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:container_native_virtualization:4"
            ],
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            "product": "Red Hat OpenShift Virtualization 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
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            ],
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            "product": "Red Hat OpenStack Platform 18.0",
            "vendor": "Red Hat"
          },
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            "cpes": [
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            ],
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            "product": "Red Hat Quay 3",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
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            ],
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            "vendor": "Red Hat"
          },
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            ],
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            "product": "Red Hat Service Interconnect 2",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
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            ],
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            "vendor": "Red Hat"
          },
          {
            "cpes": [
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            ],
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            "vendor": "Red Hat"
          },
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            ],
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            "vendor": "Red Hat"
          },
          {
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              "cpe:/a:redhat:zero_trust_workload_identity_manager:0"
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            "vendor": "Red Hat"
          },
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              "name": "AddressParser.Parse"
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              "name": "AddressParser.ParseList"
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              "name": "Header.AddressList"
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CVE-2026-39836 (GCVE-0-2026-39836)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30

Title

Panic in Dial and LookupPort when handling NUL byte on Windows in net

Summary

The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-248 - Uncaught Exception

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79006
	https://groups.google.com/g/golang-announce/c/qcC…
	https://go.dev/cl/775320
	https://pkg.go.dev/vuln/GO-2026-4971

Impacted products

	Vendor	Product	Version
	Go standard library	net	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-46599 (GCVE-0-2026-46599)

Vulnerability from cvelistv5 – Published: 2026-05-29 19:35 – Updated: 2026-06-01 14:44

Title

Excessive resource consumption in PackBits decompression in golang.org/x/image/tiff

Summary

The TIFF decoder does not place a limit on the size of PackBits-compressed data. A maliciously-crafted image can exploit this to cause a small image (both in terms of pixel width/height and encoded size) to make the decoder decode large amounts of compressed data.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79577
	https://go.dev/cl/759960
	https://groups.google.com/g/golang-announce/c/uhY…
	https://pkg.go.dev/vuln/GO-2026-5032

Impacted products

	Vendor	Product	Version
	golang.org/x/image	golang.org/x/image/tiff	Affected: 0 , < 0.41.0 (semver)

Credits

Uuganbayar Lkhamsuren

Show details on NVD website

JSON

To clipboard

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CVE-2026-39826 (GCVE-0-2026-39826)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05

Title

Escaper bypass leads to XSS in html/template

Summary

If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78981
	https://go.dev/cl/771180
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4980

Impacted products

	Vendor	Product	Version
	Go standard library	html/template	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

Mundur (https://github.com/M0nd0R)

Show details on NVD website

JSON

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CVE-2026-29181 (GCVE-0-2026-29181)

Vulnerability from cvelistv5 – Published: 2026-04-07 20:29 – Updated: 2026-06-30 12:07

Title

OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)

Summary

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M

References

URL

Tags

https://github.com/open-telemetry/opentelemetry-g…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	open-telemetry	opentelemetry-go	Affected: >= 1.36.0, < 1.41.0

Show details on NVD website

JSON

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CVE-2026-1229 (GCVE-0-2026-1229)

Vulnerability from cvelistv5 – Published: 2026-02-24 07:58 – Updated: 2026-02-24 15:10

Title

Incorrect calculation in CIRCL secp384r1 CombinedMult

Summary

The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas. ECDH and ECDSA signing relying on this curve are not affected. The bug was fixed in v1.6.3 https://github.com/cloudflare/circl/releases/tag/v1.6.3 .

Severity ?

2.9 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/U:Amber

CWE

CWE-682 - Incorrect Calculation

Assigner

cloudflare

References

URL

Tags

https://github.com/cloudflare/circl

Impacted products

	Vendor	Product	Version
	Cloudflare	CIRCL	Affected: CIRCL up to version 1.6.2 , < 1.6.3 (custom)

Credits

Guido Vranken

Show details on NVD website

JSON

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CVE-2026-33811 (GCVE-0-2026-33811)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-03 12:04

Title

Crash when handling long CNAME response in net

Summary

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-415 - Double Free

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78803
	https://go.dev/cl/767860
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4981

Impacted products

	Vendor	Product	Version
	Go standard library	net	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

hamayanhamayan

Show details on NVD website

JSON

To clipboard

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CVE-2026-39835 (GCVE-0-2026-39835)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:05

Title

Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

Summary

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79563
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781660
	https://pkg.go.dev/vuln/GO-2026-5015

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

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CVE-2026-39832 (GCVE-0-2026-39832)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:05

Title

Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent

Summary

When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-281 - Improper Preservation of Permissions

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79435
	https://go.dev/cl/778642
	https://groups.google.com/g/golang-announce/c/a08…
	https://pkg.go.dev/vuln/GO-2026-5006

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh/agent	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

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CVE-2026-42504 (GCVE-0-2026-42504)

Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-06-26 20:22

Title

Quadratic complexity in WordDecoder.DecodeHeader in mime

Summary

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79217
	https://go.dev/cl/774481
	https://groups.google.com/g/golang-announce/c/tKs…
	https://pkg.go.dev/vuln/GO-2026-5038

Impacted products

	Vendor	Product	Version
	Go standard library	mime	Affected: 0 , < 1.25.11 (semver) Affected: 1.26.0-0 , < 1.26.4 (semver)

Credits

p4p3r (https://hackerone.com/p4p3r_hak)

Show details on NVD website

JSON

To clipboard

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CVE-2026-46595 (GCVE-0-2026-46595)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:05

Title

Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh

Summary

Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

CWE

CWE-863 - Incorrect Authorization

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79570
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781642
	https://pkg.go.dev/vuln/GO-2026-5023

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-39828 (GCVE-0-2026-39828)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-02 12:05

Title

Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

Summary

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.

Severity ?

6.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CWE

CWE-863 - Incorrect Authorization

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79562
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781621
	https://pkg.go.dev/vuln/GO-2026-5014

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2026-07-02T12:05:14.977Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
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            "name": "RHBZ#2480687",
            "tags": [
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            "tags": [
              "x_sadp-csaf-vex"
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            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39828.json"
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          {
            "tags": [
              "vendor-advisory",
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            "url": "https://access.redhat.com/errata/RHSA-2026:26547"
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            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:26546"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:26547: Red Hat Advanced Cluster Security for Kubernetes 4.10"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:26546: Red Hat Advanced Cluster Security for Kubernetes 4.9"
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        "title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions",
        "workarounds": [
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            "lang": "en",
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          }
        ],
        "x_adpType": "supplier",
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          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
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          "programRoutines": [
            {
              "name": "connection.serverAuthenticate"
            },
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              "name": "NewServerConn"
            }
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          "vendor": "golang.org/x/crypto",
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              "lessThan": "0.52.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "NCC Group Cryptography Services, sponsored by Teleport"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "CWE-863: Incorrect Authorization",
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            }
          ]
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      "providerMetadata": {
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          "url": "https://go.dev/issue/79562"
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          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
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          "url": "https://go.dev/cl/781621"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5014"
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      ],
      "title": "Invoking  bypass of certificate restrictions in golang.org/x/crypto/ssh"
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}

CVE-2026-46598 (GCVE-0-2026-46598)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 18:14

Title

Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent

Summary

For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-129 - Improper Validation of Array Index

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79596
	https://go.dev/cl/781360
	https://groups.google.com/g/golang-announce/c/a08…
	https://pkg.go.dev/vuln/GO-2026-5033

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh/agent	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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CVE-2025-68121 (GCVE-0-2025-68121)

Vulnerability from cvelistv5 – Published: 2026-02-05 17:48 – Updated: 2026-04-29 13:29

Title

Unexpected session resumption in crypto/tls

Summary

During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user calls Config.Clone and mutates the returned Config, or uses Config.GetConfigForClient. This can cause a client to resume a session with a server that it would not have resumed with during the initial handshake, or cause a server to resume a session with a client that it would not have resumed with during the initial handshake.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-295 - Improper Certificate Validation

Assigner

Go

References

URL

Tags

	https://groups.google.com/g/golang-announce/c/K09…
	https://go.dev/cl/737700
	https://go.dev/issue/77217
	https://pkg.go.dev/vuln/GO-2026-4337

Impacted products

	Vendor	Product	Version
	Go standard library	crypto/tls	Affected: 0 , < 1.24.13 (semver) Affected: 1.25.0-0 , < 1.25.7 (semver) Affected: 1.26.0-rc.1 , < 1.26.0-rc.3 (semver)

Credits

Coia Prant (github.com/rbqvq) Go Security Team

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
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              "attackVector": "NETWORK",
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CVE-2026-39819 (GCVE-0-2026-39819)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:29

Title

Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go

Summary

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

CWE

CWE-377 - Insecure Temporary File

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78584
	https://go.dev/cl/763882
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4978

Impacted products

	Vendor	Product	Version
	Go toolchain	cmd/go	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

Harshit Gupta (Mr HAX)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
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              "baseScore": 5.3,
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              "confidentialityImpact": "LOW",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4978"
        }
      ],
      "title": "Invoking \"go bug\" follows symlinks in predictable temporary filenames in cmd/go"
    }
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}

CVE-2026-33814 (GCVE-0-2026-33814)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-02 12:05

Title

Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

Summary

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

Go

References

URL

Tags

	https://go.dev/cl/761581
	https://go.dev/cl/761640
	https://go.dev/issue/78476
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4918

Impacted products

Vendor

Product

Version

golang.org/x/net

golang.org/x/net/http2

Affected: 0 , < 0.53.0 (semver)

Go standard library

net/http

Affected: 0 , < 1.25.10 (semver)
Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

Marwan Atia (marwansamir688@gmail.com)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27145 (GCVE-0-2026-27145)

Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-07-03 12:04

Title

Inefficient candidate hostname parsing in crypto/x509

Summary

(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

Go

References

URL

Tags

	https://go.dev/cl/783621
	https://go.dev/issue/79694
	https://groups.google.com/g/golang-announce/c/tKs…
	https://pkg.go.dev/vuln/GO-2026-5037

Impacted products

	Vendor	Product	Version
	Go standard library	crypto/x509	Affected: 0 , < 1.25.11 (semver) Affected: 1.26.0-0 , < 1.26.4 (semver)

Credits

Jakub Ciolek - https://ciolek.dev/

Show details on NVD website

JSON

To clipboard

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CVE-2026-42507 (GCVE-0-2026-42507)

Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-06-03 19:04

Title

Arbitrary inputs are included in errors without any escaping in net/textproto

Summary

When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE

CWE-532 - Insertion of Sensitive Information into Log File

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79346
	https://go.dev/cl/777060
	https://groups.google.com/g/golang-announce/c/tKs…
	https://pkg.go.dev/vuln/GO-2026-5039

Impacted products

	Vendor	Product	Version
	Go standard library	net/textproto	Affected: 0 , < 1.25.11 (semver) Affected: 1.26.0-0 , < 1.26.4 (semver)

Show details on NVD website

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To clipboard

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          "url": "https://go.dev/issue/79346"
        },
        {
          "url": "https://go.dev/cl/777060"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5039"
        }
      ],
      "title": "Arbitrary inputs are included in errors without any escaping in net/textproto"
    }
  },
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    "dateReserved": "2026-04-28T00:21:12.792Z",
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CVE-2026-44740 (GCVE-0-2026-44740)

Vulnerability from cvelistv5 – Published: 2026-06-01 16:04 – Updated: 2026-06-01 18:14

Title

go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion

Summary

Billy is an interface filesystem abstraction for Go. Prior to versions 5.9.0 and 6.0.0-alpha.1, multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption. These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures. This issue has been patched in versions 5.9.0 and 6.0.0-alpha.1.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-674 - Uncontrolled Recursion
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/go-git/go-billy/security/advis…	x_refsource_CONFIRM
	https://github.com/go-git/go-billy/releases/tag/v5.9.0	x_refsource_MISC
	https://github.com/go-git/go-billy/releases/tag/v…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	go-git	go-billy	Affected: < 5.9.0 Affected: < 6.0.0-alpha.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-39830 (GCVE-0-2026-39830)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:05

Title

Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

Summary

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CWE

CWE-833 - Deadlock

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79564
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781640
	https://go.dev/cl/781664
	https://pkg.go.dev/vuln/GO-2026-5017

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

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CVE-2026-42499 (GCVE-0-2026-42499)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-03 12:05

Title

Quadratic string concatenation in consumePhrase in net/mail

Summary

Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78987
	https://go.dev/cl/771520
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4977

Impacted products

	Vendor	Product	Version
	Go standard library	net/mail	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Show details on NVD website

JSON

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            {
              "name": "ParseAddressList"
            }
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          "versions": [
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              "lessThan": "1.25.10",
              "status": "affected",
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              "version": "1.26.0-0",
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            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322."
        }
      ],
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        {
          "descriptions": [
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              "description": "CWE-407: Inefficient Algorithmic Complexity",
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4977"
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      ],
      "title": "Quadratic string concatenation in consumePhrase in net/mail"
    }
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CVE-2026-39831 (GCVE-0-2026-39831)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 18:52

Title

Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh

Summary

The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79566
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781662
	https://pkg.go.dev/vuln/GO-2026-5019

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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              "name": "CertChecker.CheckCert"
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              "name": "skECDSAPublicKey.Verify"
            },
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              "name": "skEd25519PublicKey.Verify"
            },
            {
              "name": "connection.serverAuthenticate"
            },
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              "name": "CertChecker.Authenticate"
            },
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              "name": "CertChecker.CheckHostKey"
            },
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              "name": "Certificate.Verify"
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              "name": "Dial"
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        }
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          "url": "https://go.dev/cl/781662"
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          "url": "https://pkg.go.dev/vuln/GO-2026-5019"
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      "title": "Invoking  bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh"
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  "cveMetadata": {
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CVE-2026-32952 (GCVE-0-2026-32952)

Vulnerability from cvelistv5 – Published: 2026-04-24 01:46 – Updated: 2026-04-24 16:29

Title

go-ntlmssp NTLM challenges can panic on malformed payloads

Summary

go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using `ntlmssp.Negotiator` as an HTTP transport. Version 0.1.1 patches the issue.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

GitHub_M

References

URL

Tags

	https://github.com/Azure/go-ntlmssp/security/advi…	x_refsource_CONFIRM
	https://github.com/Azure/go-ntlmssp/releases/tag/v0.1.1	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Azure	go-ntlmssp	Affected: < 0.1.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32952",
                "options": [
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                    "Technical Impact": "partial"
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                "timestamp": "2026-04-24T16:29:17.449582Z",
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        "providerMetadata": {
          "dateUpdated": "2026-04-24T16:29:28.264Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "product": "go-ntlmssp",
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "confidentialityImpact": "NONE",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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        "dateUpdated": "2026-04-24T01:46:31.573Z",
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          "url": "https://github.com/Azure/go-ntlmssp/releases/tag/v0.1.1"
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        "advisory": "GHSA-pjcq-xvwq-hhpj",
        "discovery": "UNKNOWN"
      },
      "title": "go-ntlmssp NTLM challenges can panic on malformed payloads"
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}

CVE-2026-39825 (GCVE-0-2026-39825)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30

Title

ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil

Summary

ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Assigner

Go

References

URL

Tags

	https://go.dev/cl/770541
	https://go.dev/issue/78948
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4976

Impacted products

	Vendor	Product	Version
	Go standard library	net/http/httputil	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "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",
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        },
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4976"
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CVE-2026-46597 (GCVE-0-2026-46597)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 14:08

Title

Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh

Summary

An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79561
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781620
	https://pkg.go.dev/vuln/GO-2026-5013

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

Maciej Kawka

Show details on NVD website

JSON

To clipboard

{
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      {
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              "attackVector": "NETWORK",
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/crypto/ssh",
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              "name": "NewClientConn"
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            {
              "name": "NewServerConn"
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              "name": "curve25519sha256.Client"
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CVE-2026-39833 (GCVE-0-2026-39833)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 18:58

Title

Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent

Summary

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-358 - Improperly Implemented Security Check for Standard

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79436
	https://go.dev/cl/778640
	https://go.dev/cl/778641
	https://groups.google.com/g/golang-announce/c/a08…
	https://pkg.go.dev/vuln/GO-2026-5005

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh/agent	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

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CVE-2026-42500 (GCVE-0-2026-42500)

Vulnerability from cvelistv5 – Published: 2026-05-29 18:36 – Updated: 2026-05-29 19:51

Title

Panic when reading out of bound palette index in golang.org/x/image/bmp

Summary

Decoding a paletted BMP file with an out-of-range palette index results in a panic when accessing pixels in the invalid image.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-129 - Improper Validation of Array Index

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79576
	https://groups.google.com/g/golang-announce/c/uhY…
	https://go.dev/cl/781500
	https://pkg.go.dev/vuln/GO-2026-5031

Impacted products

	Vendor	Product	Version
	golang.org/x/image	golang.org/x/image/bmp	Affected: 0 , < 0.41.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-42501 (GCVE-0-2026-42501)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 15:48

Title

Malicious module proxy can bypass checksum database in cmd/go

Summary

A malicious module proxy can exploit a flaw in the go command's validation of module checksums to bypass checksum database validation. This vulnerability affects any user using an untrusted module proxy (GOMODPROXY) or checksum database (GOSUMDB). A malicious module proxy can serve altered versions of the Go toolchain. When selecting a different version of the Go toolchain than the currently installed toolchain (due to the GOTOOLCHAIN environment variable, or a go.work or go.mod with a toolchain line), the go command will download and execute a toolchain provided by the module proxy. A malicious module proxy can bypass checksum database validation for this downloaded toolchain. Since this vulnerability affects the security of toolchain downloads, setting GOTOOLCHAIN to a fixed version is not sufficient. You must upgrade your base Go toolchain. The go tool always validates the hash of a toolchain before executing it, so fixed versions will refuse to execute any cached, altered versions of the toolchain. The go tool trusts go.sum files to contain accurate hashes of the current module's dependencies. A malicious proxy exploiting this vulnerability to serve an altered module will have caused an incorrect hash to be recorded in the go.sum. Users who have configured a non-trusted GOPROXY can determine if they have been affected by running "rm go.sum ; go mod tidy ; go mod verify", which will revalidate all dependencies of the current module. The specific flaw in more detail: The go command consults the checksum database to validate downloaded modules, when a module is not listed in the go.sum file. It verifies that the module hash reported by the checksum database matches the hash of the downloaded module. If, however, the checksum database returns a successful response that contains no entry for the module, the go command incorrectly permitted validation to succeed. A module proxy may mirror or proxy the checksum database, in which case the go command will not connect to the checksum database directly. Checksums reported by the checksum database are cryptographically signed, so a malicious proxy cannot alter the reported checksum for a module. However, a proxy which returns an empty checksum response, or a checksum response for an unrelated module, could cause the go command to proceed as if a downloaded module has been validated.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

Go

References

URL

Tags

	https://go.dev/cl/775321
	https://go.dev/issue/79070
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4984

Impacted products

	Vendor	Product	Version
	Go toolchain	cmd/go	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

Mundur (https://github.com/M0nd0R)

Show details on NVD website

JSON

To clipboard

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CVE-2026-44973 (GCVE-0-2026-44973)

Vulnerability from cvelistv5 – Published: 2026-05-28 21:26 – Updated: 2026-06-01 18:41

Title

Billy: Path traversal vulnerabilities

Summary

Billy is an interface filesystem abstraction for Go. Prior to 5.9.0, multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories. While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations. This vulnerability is fixed in 5.9.0.

Severity ?

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

https://github.com/go-git/go-billy/security/advis…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	go-git	go-billy	Affected: < 5.9.0

Show details on NVD website

JSON

To clipboard

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    "dateReserved": "2026-05-08T16:23:33.263Z",
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CVE-2026-33812 (GCVE-0-2026-33812)

Vulnerability from cvelistv5 – Published: 2026-04-21 19:21 – Updated: 2026-04-21 20:43

Title

Excessive memory allocation when decoding malicious SFNT in golang.org/x/image

Summary

Parsing a malicious font file can cause excessive memory allocation.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

Go

References

URL

Tags

	https://go.dev/cl/761180
	https://go.dev/issue/78382
	https://pkg.go.dev/vuln/GO-2026-4962

Impacted products

	Vendor	Product	Version
	golang.org/x/image	golang.org/x/image/font/sfnt	Affected: 0 , < 0.39.0 (semver)

Credits

Andy Gill, ZephrSec Ltd

Show details on NVD website

JSON

To clipboard

{
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CVE-2026-39829 (GCVE-0-2026-39829)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:04

Title

Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh

Summary

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-1176 - Inefficient CPU Computation

Assigner

Go

References

URL

Tags

	https://go.dev/issue/79565
	https://groups.google.com/g/golang-announce/c/a08…
	https://go.dev/cl/781641
	https://go.dev/cl/781661
	https://pkg.go.dev/vuln/GO-2026-5018

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.52.0 (semver)

Credits

NCC Group Cryptography Services, sponsored by Teleport

Show details on NVD website

JSON

To clipboard

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        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
        },
        {
          "url": "https://go.dev/cl/781641"
        },
        {
          "url": "https://go.dev/cl/781661"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5018"
        }
      ],
      "title": "Invoking  pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-39829",
    "datePublished": "2026-05-22T02:31:27.324Z",
    "dateReserved": "2026-04-07T18:13:03.528Z",
    "dateUpdated": "2026-07-03T12:04:53.309Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-39823 (GCVE-0-2026-39823)

Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05

Title

Bypass of meta content URL escaping causes XSS in html/template

Summary

CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

Go

References

URL

Tags

	https://go.dev/issue/78913
	https://go.dev/cl/769920
	https://groups.google.com/g/golang-announce/c/qcC…
	https://pkg.go.dev/vuln/GO-2026-4982

Impacted products

	Vendor	Product	Version
	Go standard library	html/template	Affected: 0 , < 1.25.10 (semver) Affected: 1.26.0-0 , < 1.26.3 (semver)

Credits

Samy Ghannad

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.1,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-39823",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-08T14:05:34.310805Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-08T14:05:55.152Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "html/template",
          "product": "html/template",
          "programRoutines": [
            {
              "name": "tMetaContent"
            },
            {
              "name": "Template.Execute"
            },
            {
              "name": "Template.ExecuteTemplate"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.25.10",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.26.3",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Samy Ghannad"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a \u003cmeta\u003e tag\u0027s \u003ccontent\u003e attribute. If the URL content were to insert ASCII whitespaces around the \u0027=\u0027 rune inside of the \u003ccontent\u003e attribute, the escaper would fail to similarly escape it, leading to XSS."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T19:41:19.524Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/78913"
        },
        {
          "url": "https://go.dev/cl/769920"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4982"
        }
      ],
      "title": "Bypass of meta content URL escaping causes XSS in html/template"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-39823",
    "datePublished": "2026-05-07T19:41:19.524Z",
    "dateReserved": "2026-04-07T18:13:03.527Z",
    "dateUpdated": "2026-05-08T14:05:55.152Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Vulnerability from cleanstart

Tags

Sightings

Nomenclature

Action not permitted

Vulnerability from cleanstart

GHSA-QW64-3X98-G7Q2

Impact

Patches

Credits

GHSA-PJCQ-XVWQ-HHPJ

GHSA-M3XC-H892-GGX6

Impact

Patches

Credits

GHSA-MH2Q-Q3FH-2475

severity

relevant links

vulnerability details

root cause

impact

proof of concept

fix recommendation

CVE-2026-39827 (GCVE-0-2026-39827)

CVE-2026-33813 (GCVE-0-2026-33813)

CVE-2026-39834 (GCVE-0-2026-39834)

CVE-2026-42508 (GCVE-0-2026-42508)

CVE-2026-39817 (GCVE-0-2026-39817)

CVE-2026-39820 (GCVE-0-2026-39820)

CVE-2026-39836 (GCVE-0-2026-39836)

CVE-2026-46599 (GCVE-0-2026-46599)

CVE-2026-39826 (GCVE-0-2026-39826)

CVE-2026-29181 (GCVE-0-2026-29181)

CVE-2026-1229 (GCVE-0-2026-1229)

CVE-2026-33811 (GCVE-0-2026-33811)

CVE-2026-39835 (GCVE-0-2026-39835)

CVE-2026-39832 (GCVE-0-2026-39832)

CVE-2026-42504 (GCVE-0-2026-42504)

CVE-2026-46595 (GCVE-0-2026-46595)

CVE-2026-39828 (GCVE-0-2026-39828)

CVE-2026-46598 (GCVE-0-2026-46598)

CVE-2025-68121 (GCVE-0-2025-68121)

CVE-2026-39819 (GCVE-0-2026-39819)

CVE-2026-33814 (GCVE-0-2026-33814)

CVE-2026-27145 (GCVE-0-2026-27145)

CVE-2026-42507 (GCVE-0-2026-42507)

CVE-2026-44740 (GCVE-0-2026-44740)

CVE-2026-39830 (GCVE-0-2026-39830)

CVE-2026-42499 (GCVE-0-2026-42499)

CVE-2026-39831 (GCVE-0-2026-39831)

CVE-2026-32952 (GCVE-0-2026-32952)

CVE-2026-39825 (GCVE-0-2026-39825)

CVE-2026-46597 (GCVE-0-2026-46597)

CVE-2026-39833 (GCVE-0-2026-39833)

CVE-2026-42500 (GCVE-0-2026-42500)

CVE-2026-42501 (GCVE-0-2026-42501)

CVE-2026-44973 (GCVE-0-2026-44973)

CVE-2026-33812 (GCVE-0-2026-33812)

CVE-2026-39829 (GCVE-0-2026-39829)

CVE-2026-39823 (GCVE-0-2026-39823)

Tags

Sightings

Nomenclature