{
  "cveId": "CVE-2026-34601",
  "url": "https://patchblox.com/security/cve/CVE-2026-34601",
  "summary": "CVE-2026-34601 is fixed in node-xmldom on 1 platform by DEBIAN-CVE-2026-34601 (version 0.9.9-1), released April 2, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion",
  "description": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) \u0060DOMParser\u0060 and \u0060XMLSerializer\u0060 module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator ]]\u003E to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain text-only became active XML markup in the serialized output, enabling XML structure injection and downstream business-logic manipulation. This issue has been patched in xmldom version 0.6.0 and @xmldom/xmldom versions 0.8.12 and 0.9.9.",
  "published": "2026-04-02T18:16:31Z",
  "severity": "Important",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "cwe": "XML Injection (aka Blind XPath Injection)",
  "epss": 0.0049,
  "epssPercentile": 0.42394,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34601",
  "fixes": [
    {
      "platform": "linux",
      "product": "node-xmldom",
      "release": "Debian 14",
      "fixedVersion": "0.9.9-1",
      "fix": "DEBIAN-CVE-2026-34601",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-34601",
      "released": "2026-04-02T18:16:31Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}