{
  "cveId": "CVE-2026-57436",
  "url": "https://patchblox.com/security/cve/CVE-2026-57436",
  "summary": "CVE-2026-57436 is fixed in ruby-nokogiri on 1 platform by DEBIAN-CVE-2026-57436 (version 1.19.4\u002Bdfsg-1), released July 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Nokogiri: Possible Use-After-Free when setting \u0060Document#root=\u0060 to an invalid node type",
  "description": "Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Document#root= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage collection or finalization, leading to an invalid memory read or potentially a segfault. This vulnerability is fixed in 1.19.4.",
  "published": "2026-06-25T15:16:41Z",
  "severity": "Moderate",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "cwe": "Use After Free",
  "epss": 0.00402,
  "epssPercentile": 0.34731,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57436",
  "fixes": [
    {
      "platform": "linux",
      "product": "ruby-nokogiri",
      "release": "Debian 14",
      "fixedVersion": "1.19.4\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-57436",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-57436",
      "released": "2026-07-03T14:54:39Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}