{
  "cveId": "CVE-2026-22701",
  "url": "https://patchblox.com/security/cve/CVE-2026-22701",
  "summary": "CVE-2026-22701 is fixed in 4 products on 1 platform, first by python-filelock 3.0.4-1ubuntu0.1~esm1, released January 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "python-filelock: filelock is a platform-independent file lock for Python",
  "description": "filelock is a platform-independent file lock for Python. Prior to version 3.20.3, a TOCTOU race condition vulnerability exists in the SoftFileLock implementation of the filelock package. An attacker with local filesystem access and permission to create symlinks can exploit a race condition between the permission validation and file creation to cause lock operations to fail or behave unexpectedly. The vulnerability occurs in the _acquire() method between raise_on_not_writable_file() (permission check) and os.open() (file creation). During this race window, an attacker can create a symlink at the lock file path, potentially causing the lock to operate on an unintended target file or leading to denial of service. This issue has been patched in version 3.20.3.",
  "published": "2026-01-09T22:15:00Z",
  "severity": "medium",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H",
  "epss": 0.00127,
  "epssPercentile": 0.02346,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.9.0-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-22701",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-22701",
      "released": "2026-01-10T06:15:52Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "Debian 14",
      "fixedVersion": "3.20.3-1",
      "fix": "DEBIAN-CVE-2026-22701",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-22701",
      "released": "2026-01-10T06:15:52Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.0.4-1ubuntu0.1~esm1",
      "fix": "python-filelock 3.0.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-filelock-3.0.4-1ubuntu0.1-esm1",
      "released": "2026-01-09T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "3.12.2-150400.10.8.1",
      "fix": "SUSE-SU-2026:0220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0220-1",
      "released": "2026-01-22T12:15:26Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "3.18.0-160000.3.1",
      "fix": "OPENSUSE-SU-2026:20144-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20144-1",
      "released": "2026-01-30T21:24:37Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "sles 15.7",
      "fixedVersion": "3.0.12-150100.3.9.1",
      "fix": "SUSE-SU-2026:0335-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0335-1",
      "released": "2026-01-29T10:15:42Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "sles 15.7",
      "fixedVersion": "3.12.2-150400.10.8.1",
      "fix": "SUSE-SU-2026:0220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0220-1",
      "released": "2026-01-22T12:15:26Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock",
      "release": "sles 16.0",
      "fixedVersion": "3.18.0-160000.3.1",
      "fix": "SUSE-SU-2026:20216-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20216-1",
      "released": "2026-01-30T21:26:21Z"
    },
    {
      "platform": "linux",
      "product": "python-filelock-doc",
      "release": "amzn 2023",
      "fixedVersion": "3.3.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1415",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-filelock",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.0.4-1ubuntu0.1~esm1",
      "fix": "python3-filelock 3.0.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-filelock-3.0.4-1ubuntu0.1-esm1",
      "released": "2026-01-09T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-filelock",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.6.0-1ubuntu0.1~esm1",
      "fix": "python3-filelock 3.6.0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-filelock-3.6.0-1ubuntu0.1-esm1",
      "released": "2026-01-09T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-filelock",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "3.13.1-1ubuntu0.1~esm1",
      "fix": "python3-filelock 3.13.1-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-filelock-3.13.1-1ubuntu0.1-esm1",
      "released": "2026-01-09T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-filelock",
      "release": "amzn 2023",
      "fixedVersion": "3.3.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1415",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.13-filelock",
      "release": "amzn 2023",
      "fixedVersion": "3.18.0-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1411",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1411",
      "released": "2026-02-16T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}