bit-python-min-2026-82049

bitnami_vulndb

Description

In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.

Timeline

Published: unknown
Last Modified: unknown

CVSS Details

CVSS details not available.

Affected Products

No product information available.

References

Linked Vulnerabilities

No linked vulnerabilities found.

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "python-min",
        "purl": "pkg:bitnami/python-min"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.14.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-82049"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.",
  "id": "BIT-python-min-2026-82049",
  "modified": "2026-09-21T09:26:48.669Z",
  "published": "2026-09-21T09:07:26.945Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/14/27"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/issues/157190"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/157191"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82049"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "tarfile extraction filters allow file modification and content disclosure via hard link to symlink"
}

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