PYSEC-2026-1795

Vulnerability from pysec - Published: 2026-07-07 16:03 - Updated: 2026-07-07 17:25
VLAI
Details

When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn't implement PEP 706. Note that upgrading pip to a "fixed" version for this vulnerability doesn't fix all known vulnerabilities that are remediated by using a Python version that implements PEP 706. Note that this is a vulnerability in pip's fallback implementation of tar extraction for Python versions that don't implement PEP 706 and therefore are not secure to all vulnerabilities in the Python 'tarfile' module. If you're using a Python version that implements PEP 706 then pip doesn't use the "vulnerable" fallback code. Mitigations include upgrading to a version of pip that includes the fix, upgrading to a Python version that implements PEP 706 (Python >=3.9.17, >=3.10.12, >=3.11.4, or >=3.12), applying the linked patch, or inspecting source distributions (sdists) before installation as is already a best-practice.

Severity
5.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Impacted products
Name purl
pip pkg:pypi/pip
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pip",
        "purl": "pkg:pypi/pip"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "25.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2",
        "0.2.1",
        "0.3",
        "0.3.1",
        "0.4",
        "0.5",
        "0.5.1",
        "0.6",
        "0.6.1",
        "0.6.2",
        "0.6.3",
        "0.7",
        "0.7.1",
        "0.7.2",
        "0.8",
        "0.8.1",
        "0.8.2",
        "0.8.3",
        "1.0",
        "1.0.1",
        "1.0.2",
        "1.1",
        "1.2",
        "1.2.1",
        "1.3",
        "1.3.1",
        "1.4",
        "1.4.1",
        "1.5",
        "1.5.1",
        "1.5.2",
        "1.5.3",
        "1.5.4",
        "1.5.5",
        "1.5.6",
        "10.0.0",
        "10.0.0b1",
        "10.0.0b2",
        "10.0.1",
        "18.0",
        "18.1",
        "19.0",
        "19.0.1",
        "19.0.2",
        "19.0.3",
        "19.1",
        "19.1.1",
        "19.2",
        "19.2.1",
        "19.2.2",
        "19.2.3",
        "19.3",
        "19.3.1",
        "20.0",
        "20.0.1",
        "20.0.2",
        "20.1",
        "20.1.1",
        "20.1b1",
        "20.2",
        "20.2.1",
        "20.2.2",
        "20.2.3",
        "20.2.4",
        "20.2b1",
        "20.3",
        "20.3.1",
        "20.3.2",
        "20.3.3",
        "20.3.4",
        "20.3b1",
        "21.0",
        "21.0.1",
        "21.1",
        "21.1.1",
        "21.1.2",
        "21.1.3",
        "21.2",
        "21.2.1",
        "21.2.2",
        "21.2.3",
        "21.2.4",
        "21.3",
        "21.3.1",
        "22.0",
        "22.0.1",
        "22.0.2",
        "22.0.3",
        "22.0.4",
        "22.1",
        "22.1.1",
        "22.1.2",
        "22.1b1",
        "22.2",
        "22.2.1",
        "22.2.2",
        "22.3",
        "22.3.1",
        "23.0",
        "23.0.1",
        "23.1",
        "23.1.1",
        "23.1.2",
        "23.2",
        "23.2.1",
        "23.3",
        "23.3.1",
        "23.3.2",
        "24.0",
        "24.1",
        "24.1.1",
        "24.1.2",
        "24.1b1",
        "24.1b2",
        "24.2",
        "24.3",
        "24.3.1",
        "25.0",
        "25.0.1",
        "25.1",
        "25.1.1",
        "25.2",
        "6.0",
        "6.0.1",
        "6.0.2",
        "6.0.3",
        "6.0.4",
        "6.0.5",
        "6.0.6",
        "6.0.7",
        "6.0.8",
        "6.1.0",
        "6.1.1",
        "7.0.0",
        "7.0.1",
        "7.0.2",
        "7.0.3",
        "7.1.0",
        "7.1.1",
        "7.1.2",
        "8.0.0",
        "8.0.1",
        "8.0.2",
        "8.0.3",
        "8.1.0",
        "8.1.1",
        "8.1.2",
        "9.0.0",
        "9.0.1",
        "9.0.2",
        "9.0.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-8869",
    "GHSA-4xh5-x5gv-qwph"
  ],
  "details": "When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn\u0027t implement PEP 706. Note that upgrading pip to a \"fixed\" version for this vulnerability doesn\u0027t fix all known vulnerabilities that are remediated by using a Python version that implements PEP 706. Note that this is a vulnerability in pip\u0027s fallback implementation of tar extraction for Python versions that don\u0027t implement PEP 706 and therefore are not secure to all vulnerabilities in the Python \u0027tarfile\u0027 module. If you\u0027re using a Python version that implements PEP 706 then pip doesn\u0027t use the \"vulnerable\" fallback code. Mitigations include upgrading to a version of pip that includes the fix, upgrading to a Python version that implements PEP 706 (Python \u003e=3.9.17, \u003e=3.10.12, \u003e=3.11.4, or \u003e=3.12), applying the linked patch, or inspecting source distributions (sdists) before installation as is already a best-practice.",
  "id": "PYSEC-2026-1795",
  "modified": "2026-07-07T17:25:03.388917Z",
  "published": "2026-07-07T16:03:05.322538Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8869"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/pip/pull/13550"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pypa/pip/commit/f2b92314da012b9fffa36b3f3e67748a37ef464a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pypa/pip"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00028.html"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/IF5A3GCJY3VH7BVHJKOWOJFKTW7VFQEN"
    },
    {
      "type": "WEB",
      "url": "https://pip.pypa.io/en/stable/news/#v25-2"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/pip"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-4xh5-x5gv-qwph"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pip\u0027s fallback tar extraction doesn\u0027t check symbolic links point to extraction directory"
}



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