{
  "cveId": "CVE-2026-83612",
  "url": "https://patchblox.com/security/cve/CVE-2026-83612",
  "summary": "CVE-2026-83612 is fixed in node-xmldom on 1 platform by DEBIAN-CVE-2026-83612 (version 0.9.12-1), released September 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "node-xmldom: xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module",
  "description": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.0-beta.1 until 0.9.12, HTML-mode parsing through DOMParser.parseFromString() mishandles a mixed-case closing tag for the script, style, textarea, or title raw-text elements. parseHtmlSpecialContent, selected by isHTMLRawTextElement or isHTMLEscapableRawTextElement, uses a case-sensitive indexOf() and then calls substring() with a missing-close result of negative one, causing unstable parser progression and quadratic output amplification. A small untrusted text/html document can consequently consume disproportionate CPU and memory when parsed and serialized. This issue is fixed in @xmldom/xmldom version 0.9.12.",
  "published": "2026-09-01T15:17:39Z",
  "severity": "",
  "epss": 0.00524,
  "epssPercentile": 0.44704,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-xmldom",
      "release": "Debian 14",
      "fixedVersion": "0.9.12-1",
      "fix": "DEBIAN-CVE-2026-83612",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-83612",
      "released": "2026-09-08T02:27:47Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}