{
  "cveId": "CVE-2026-64846",
  "url": "https://patchblox.com/security/cve/CVE-2026-64846",
  "summary": "CVE-2026-64846 is fixed in nix on 1 platform by DEBIAN-CVE-2026-64846 (version 2.35.4\u002Bdfsg-1), released August 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "nix: Nix is a package manager for Linux and other Unix systems",
  "description": "Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed with the recursive-nix experimental feature can exploit a time-of-check/time-of-use race involving final symlink handling in the LocalStore restore path. The race can cause writeFile to follow a substituted final symlink when opening a path with O_TRUNC instead of enforcing FinalSymlink::DontFollow, allowing the Nix process or nix-daemon to create or truncate an empty file outside the build sandbox with the daemon user\u0027s permissions. The primitive does not provide arbitrary-content writes and requires winning the race. This issue is fixed in version 2.35.0.",
  "published": "2026-08-20T17:19:16Z",
  "severity": "low",
  "cvss": 2.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N",
  "epss": 0.00108,
  "epssPercentile": 0.01192,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "nix",
      "release": "Debian 14",
      "fixedVersion": "2.35.4\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-64846",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64846",
      "released": "2026-08-20T17:19:16Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}