Vulnerability-Lookup

PYSEC-2026-546

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:23

Details

PySyft (Syft Datasite/Server) versions 0.9.5 and earlier are vulnerable to remote code execution due to insufficient validation and sandboxing of user-submitted code. The system allows low-privileged users to submit Python functions (via @sy.syft_function()) for remote execution on the server. While a code approval mechanism exists, the submitted code undergoes no security checks for dangerous operations (e.g., file access, command execution). Once approved, the code is executed within the server process using exec() and eval() functions without proper isolation. A remote attacker can leverage this to execute arbitrary Python code on the server, leading to complete compromise of the server environment.

Severity ?

9.8 (Critical)


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

Impacted products

Name	purl
syft	pkg:pypi/syft

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "syft",
        "purl": "pkg:pypi/syft"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.9.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.0a1",
        "0.1.10a1",
        "0.1.10a2",
        "0.1.10a4",
        "0.1.11a1",
        "0.1.12a1",
        "0.1.13a1",
        "0.1.14a1",
        "0.1.15a1",
        "0.1.16a1",
        "0.1.19a1",
        "0.1.1a2",
        "0.1.20a1",
        "0.1.21a1",
        "0.1.22a1",
        "0.1.23a1",
        "0.1.24a1",
        "0.1.25a1",
        "0.1.26a1",
        "0.1.27a1",
        "0.1.28a1",
        "0.1.29a1",
        "0.1.2a1",
        "0.1.3a1",
        "0.1.4a1",
        "0.1.4a2",
        "0.1.5a1",
        "0.1.6a1",
        "0.1.7a1",
        "0.1.8a1",
        "0.1.9a1",
        "0.2.0a1",
        "0.2.0a2",
        "0.2.1a1",
        "0.2.2a1",
        "0.2.3",
        "0.2.3a1",
        "0.2.3a2",
        "0.2.3a3",
        "0.2.4",
        "0.2.5",
        "0.2.6",
        "0.2.7",
        "0.2.8",
        "0.2.9",
        "0.3.0",
        "0.5.0",
        "0.5.0rc1",
        "0.5.0rc2",
        "0.5.0rc3",
        "0.5.1",
        "0.6.0",
        "0.6.0a0",
        "0.6.0a1",
        "0.6.0a2",
        "0.6.0a3",
        "0.6.0a4",
        "0.6.0a5",
        "0.7.0",
        "0.7.0b1",
        "0.7.0b10",
        "0.7.0b11",
        "0.7.0b12",
        "0.7.0b13",
        "0.7.0b14",
        "0.7.0b15",
        "0.7.0b16",
        "0.7.0b17",
        "0.7.0b18",
        "0.7.0b19",
        "0.7.0b2",
        "0.7.0b20",
        "0.7.0b21",
        "0.7.0b22",
        "0.7.0b23",
        "0.7.0b24",
        "0.7.0b25",
        "0.7.0b26",
        "0.7.0b27",
        "0.7.0b28",
        "0.7.0b29",
        "0.7.0b3",
        "0.7.0b30",
        "0.7.0b31",
        "0.7.0b32",
        "0.7.0b33",
        "0.7.0b34",
        "0.7.0b35",
        "0.7.0b36",
        "0.7.0b37",
        "0.7.0b38",
        "0.7.0b39",
        "0.7.0b4",
        "0.7.0b40",
        "0.7.0b41",
        "0.7.0b42",
        "0.7.0b44",
        "0.7.0b45",
        "0.7.0b46",
        "0.7.0b47",
        "0.7.0b48",
        "0.7.0b49",
        "0.7.0b5",
        "0.7.0b50",
        "0.7.0b51",
        "0.7.0b52",
        "0.7.0b53",
        "0.7.0b54",
        "0.7.0b55",
        "0.7.0b56",
        "0.7.0b57",
        "0.7.0b58",
        "0.7.0b59",
        "0.7.0b6",
        "0.7.0b60",
        "0.7.0b61",
        "0.7.0b62",
        "0.7.0b7",
        "0.7.0b8",
        "0.7.0b9",
        "0.8.0.post2",
        "0.8.0b1",
        "0.8.0b10",
        "0.8.0b2",
        "0.8.0b3",
        "0.8.0b4",
        "0.8.0b5",
        "0.8.0b6",
        "0.8.0b7",
        "0.8.0b8",
        "0.8.0b9",
        "0.8.1",
        "0.8.1b1",
        "0.8.1b10",
        "0.8.1b11",
        "0.8.1b12",
        "0.8.1b13",
        "0.8.1b14",
        "0.8.1b15",
        "0.8.1b16",
        "0.8.1b17",
        "0.8.1b18",
        "0.8.1b19",
        "0.8.1b2",
        "0.8.1b20",
        "0.8.1b21",
        "0.8.1b3",
        "0.8.1b4",
        "0.8.1b5",
        "0.8.1b6",
        "0.8.1b7",
        "0.8.1b8",
        "0.8.1b9",
        "0.8.2",
        "0.8.2b1",
        "0.8.2b10",
        "0.8.2b11",
        "0.8.2b12",
        "0.8.2b13",
        "0.8.2b14",
        "0.8.2b15",
        "0.8.2b16",
        "0.8.2b17",
        "0.8.2b18",
        "0.8.2b19",
        "0.8.2b2",
        "0.8.2b20",
        "0.8.2b21",
        "0.8.2b22",
        "0.8.2b23",
        "0.8.2b24",
        "0.8.2b25",
        "0.8.2b26",
        "0.8.2b27",
        "0.8.2b28",
        "0.8.2b29",
        "0.8.2b3",
        "0.8.2b30",
        "0.8.2b31",
        "0.8.2b32",
        "0.8.2b33",
        "0.8.2b34",
        "0.8.2b35",
        "0.8.2b36",
        "0.8.2b37",
        "0.8.2b38",
        "0.8.2b39",
        "0.8.2b4",
        "0.8.2b40",
        "0.8.2b41",
        "0.8.2b42",
        "0.8.2b43",
        "0.8.2b44",
        "0.8.2b45",
        "0.8.2b46",
        "0.8.2b47",
        "0.8.2b48",
        "0.8.2b49",
        "0.8.2b5",
        "0.8.2b50",
        "0.8.2b51",
        "0.8.2b52",
        "0.8.2b53",
        "0.8.2b54",
        "0.8.2b55",
        "0.8.2b56",
        "0.8.2b57",
        "0.8.2b58",
        "0.8.2b59",
        "0.8.2b6",
        "0.8.2b60",
        "0.8.2b7",
        "0.8.2b8",
        "0.8.2b9",
        "0.8.3",
        "0.8.3b1",
        "0.8.3b2",
        "0.8.3b3",
        "0.8.3b4",
        "0.8.3b5",
        "0.8.3b6",
        "0.8.4",
        "0.8.4b1",
        "0.8.4b10",
        "0.8.4b11",
        "0.8.4b12",
        "0.8.4b13",
        "0.8.4b14",
        "0.8.4b15",
        "0.8.4b16",
        "0.8.4b17",
        "0.8.4b18",
        "0.8.4b19",
        "0.8.4b2",
        "0.8.4b20",
        "0.8.4b21",
        "0.8.4b22",
        "0.8.4b23",
        "0.8.4b24",
        "0.8.4b25",
        "0.8.4b26",
        "0.8.4b27",
        "0.8.4b28",
        "0.8.4b29",
        "0.8.4b3",
        "0.8.4b30",
        "0.8.4b31",
        "0.8.4b4",
        "0.8.4b5",
        "0.8.4b6",
        "0.8.4b7",
        "0.8.4b8",
        "0.8.4b9",
        "0.8.5",
        "0.8.5.post1",
        "0.8.5.post2",
        "0.8.5b1",
        "0.8.5b10",
        "0.8.5b2",
        "0.8.5b3",
        "0.8.5b4",
        "0.8.5b5",
        "0.8.5b6",
        "0.8.5b8",
        "0.8.5b9",
        "0.8.6",
        "0.8.6b1",
        "0.8.7",
        "0.8.7b1",
        "0.8.7b10",
        "0.8.7b12",
        "0.8.7b13",
        "0.8.7b14",
        "0.8.7b15",
        "0.8.7b16",
        "0.8.7b2",
        "0.8.7b3",
        "0.8.7b4",
        "0.8.7b5",
        "0.8.7b6",
        "0.8.7b7",
        "0.8.7b8",
        "0.8.7b9",
        "0.8.8",
        "0.8.8b1",
        "0.8.8b2",
        "0.8.8b3",
        "0.8.8b4",
        "0.9.0",
        "0.9.0b1",
        "0.9.0b2",
        "0.9.0b3",
        "0.9.0b4",
        "0.9.0b5",
        "0.9.1",
        "0.9.1b1",
        "0.9.1b10",
        "0.9.1b11",
        "0.9.1b2",
        "0.9.1b3",
        "0.9.1b4",
        "0.9.1b5",
        "0.9.1b6",
        "0.9.1b7",
        "0.9.1b8",
        "0.9.1b9",
        "0.9.2",
        "0.9.2b1",
        "0.9.2b2",
        "0.9.2b3",
        "0.9.2b4",
        "0.9.2b5",
        "0.9.2b6",
        "0.9.2b7",
        "0.9.2b8",
        "0.9.3",
        "0.9.3b1",
        "0.9.3b2",
        "0.9.3b4",
        "0.9.5"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-31220",
    "GHSA-cfpg-c974-jfhq"
  ],
  "details": "PySyft (Syft Datasite/Server) versions 0.9.5 and earlier are vulnerable to remote code execution due to insufficient validation and sandboxing of user-submitted code. The system allows low-privileged users to submit Python functions (via @sy.syft_function()) for remote execution on the server. While a code approval mechanism exists, the submitted code undergoes no security checks for dangerous operations (e.g., file access, command execution). Once approved, the code is executed within the server process using exec() and eval() functions without proper isolation. A remote attacker can leverage this to execute arbitrary Python code on the server, leading to complete compromise of the server environment.",
  "id": "PYSEC-2026-546",
  "modified": "2026-07-01T20:23:05.610433Z",
  "published": "2026-06-29T11:50:49.505067Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31220"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OpenMined/PySyft"
    },
    {
      "type": "WEB",
      "url": "https://www.notion.so/CVE-2026-31220-35d1e1393188814186b9e00114a8aba7"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/syft"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-cfpg-c974-jfhq"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PySyft server-side arbitrary Python execution after code approval"
}

GHSA-CFPG-C974-JFHQ

Vulnerability from github – Published: 2026-05-12 18:30 – Updated: 2026-05-18 20:24

Summary

PySyft server-side arbitrary Python execution after code approval

Details

Severity ?

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "syft"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.9.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-31220"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T20:24:15Z",
    "nvd_published_at": "2026-05-12T16:16:13Z",
    "severity": "CRITICAL"
  },
  "details": "PySyft (Syft Datasite/Server) versions 0.9.5 and earlier are vulnerable to remote code execution due to insufficient validation and sandboxing of user-submitted code. The system allows low-privileged users to submit Python functions (via @sy.syft_function()) for remote execution on the server. While a code approval mechanism exists, the submitted code undergoes no security checks for dangerous operations (e.g., file access, command execution). Once approved, the code is executed within the server process using exec() and eval() functions without proper isolation. A remote attacker can leverage this to execute arbitrary Python code on the server, leading to complete compromise of the server environment.",
  "id": "GHSA-cfpg-c974-jfhq",
  "modified": "2026-05-18T20:24:15Z",
  "published": "2026-05-12T18:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31220"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OpenMined/PySyft"
    },
    {
      "type": "WEB",
      "url": "https://www.notion.so/CVE-2026-31220-35d1e1393188814186b9e00114a8aba7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PySyft server-side arbitrary Python execution after code approval"
}

CVE-2026-31220 (GCVE-0-2026-31220)

Vulnerability from cvelistv5 – Published: 2026-05-12 00:00 – Updated: 2026-05-15 18:05

Summary

Severity ?

9.8 (Critical)


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

CWE

Assigner

mitre

References

URL

Tags

	https://github.com/OpenMined/PySyft
	https://www.notion.so/CVE-2026-31220-35d1e1393188…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-31220",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-15T17:54:50.389572Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-94",
                "description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-15T18:05:42.663Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "PySyft (Syft Datasite/Server) versions 0.9.5 and earlier are vulnerable to remote code execution due to insufficient validation and sandboxing of user-submitted code. The system allows low-privileged users to submit Python functions (via @sy.syft_function()) for remote execution on the server. While a code approval mechanism exists, the submitted code undergoes no security checks for dangerous operations (e.g., file access, command execution). Once approved, the code is executed within the server process using exec() and eval() functions without proper isolation. A remote attacker can leverage this to execute arbitrary Python code on the server, leading to complete compromise of the server environment."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-12T15:08:39.753Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/OpenMined/PySyft"
        },
        {
          "url": "https://www.notion.so/CVE-2026-31220-35d1e1393188814186b9e00114a8aba7"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-31220",
    "datePublished": "2026-05-12T00:00:00.000Z",
    "dateReserved": "2026-03-09T00:00:00.000Z",
    "dateUpdated": "2026-05-15T18:05:42.663Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2026-546

GHSA-CFPG-C974-JFHQ

CVE-2026-31220 (GCVE-0-2026-31220)

Tags

Sightings

Nomenclature