{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-44028",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-44028",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-05T00:30:16.205Z",
    "updatedAt": "2026-05-09T03:40:06.637Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": null,
      "summary": "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).",
      "affected": [
        {
          "vendor": "NixOS",
          "product": "Nix",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.24.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.28.7"
            },
            {
              "version": "2.29.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.29.4"
            },
            {
              "version": "2.30.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.30.5"
            },
            {
              "version": "2.31.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.31.5"
            },
            {
              "version": "2.32.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.32.8"
            },
            {
              "version": "2.33.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.33.6"
            },
            {
              "version": "2.34.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.34.7"
            }
          ]
        },
        {
          "vendor": "Lix Project",
          "product": "Lix",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.93.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.93.4"
            },
            {
              "version": "2.94.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.94.2"
            },
            {
              "version": "2.95.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.95.2"
            }
          ]
        }
      ]
    }
  }
}