{
  "cveId": "CVE-2026-44028",
  "url": "https://patchblox.com/security/cve/CVE-2026-44028",
  "summary": "CVE-2026-44028 is fixed in nix on 1 platform by DEBIAN-CVE-2026-44028 (version 2.34.8\u002Bdfsg-1), released May 5, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "nix: An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2",
  "description": "An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means that a stack overflow could overwrite memory on the heap and could allow arbitrary code execution as the Nix daemon (run as root in multi-user installations) if ASLR hardening is bypassed. This can be exploited by all users able to connect to the daemon (e.g., in Nix, this is configurable via the allowed-users setting, defaulting to all users). The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 for Nix (introduced in 2.24.4); and 2.95.2, 2.94.2, and 2.93.4 for Lix (introduced in 2.93.0).",
  "published": "2026-05-05T01:16:06Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
  "epss": 0.0018,
  "epssPercentile": 0.07617,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "nix",
      "release": "Debian 14",
      "fixedVersion": "2.34.8\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-44028",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-44028",
      "released": "2026-05-05T01:16:06Z"
    }
  ],
  "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"
  }
}