{
  "cveId": "CVE-2026-83619",
  "url": "https://patchblox.com/security/cve/CVE-2026-83619",
  "summary": "CVE-2026-83619 is fixed in node-xmldom on 1 platform, first by DEBIAN-CVE-2026-83619, released September 2, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "xmldom: End-tag Whitespace-Trim Regex ReDoS \u2014 quadratic backtracking in the 0.8.x end-tag parser",
  "description": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.7.0 until 0.8.15, the release-0.8.x parser in lib/sax.js trims captured end-tag names with the unanchored global expression /[ \\t\\n\\r]\u002B$/g. For an end tag containing a long whitespace run followed by a non-whitespace character, the expression retries from each possible starting position and backtracks quadratically before failing its end anchor. DOMParser.parseFromString() reaches the path under default options, allowing a small unauthenticated XML input to stall the Node.js event loop; the 0.9.x and unscoped npm lines do not contain this expression. This issue is fixed in @xmldom/xmldom version 0.8.15.",
  "published": "2026-09-01T15:17:40Z",
  "severity": "Important",
  "cwe": "Uncontrolled Resource Consumption",
  "epss": 0.00524,
  "epssPercentile": 0.44709,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83619",
  "fixes": [
    {
      "platform": "linux",
      "product": "node-xmldom",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.9.5-1",
      "fix": "DEBIAN-CVE-2026-83619",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-83619",
      "released": "2026-09-02T01:26:09Z"
    },
    {
      "platform": "linux",
      "product": "node-xmldom",
      "release": "Debian 14",
      "fixedVersion": "0.9.5-1",
      "fix": "DEBIAN-CVE-2026-83619",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-83619",
      "released": "2026-09-02T01:26:09Z"
    }
  ],
  "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"
  }
}