UnratedFix available

DEBIAN-CVE-2026-83609

Type: advisorySource: OSV1 source record

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.0 until 0.9.12, the shared reg() builder in lib/grammar.js compiles the anchored QName_exact validator with the multiline flag, so ^ and $ validate only one line instead of the complete name. createElementNS, createAttributeNS, createDocumentType, and createAttribute consequently accept a malformed XML name whose first line is valid and whose later text injects markup when serialized through either the default path or requireWellFormed: true. The triggering ECMAScript line terminators are U+000A, U+000D, U+2028, and U+2029. This issue is fixed in @xmldom/xmldom version 0.9.12.

Announced 1 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-83609

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-83609

node-xmldom

Source reference: /affected/0/package/name

Affected versions: 0.8.6-1
Source reference: /affected/0/versions
0.9.10-1
Source reference: /affected/0/versions
0.9.10-2
Source reference: /affected/0/versions
0.9.11-1
Source reference: /affected/0/versions
0.9.12-1
Source reference: /affected/0/versions
0.9.5-1
Source reference: /affected/0/versions
0.9.6-1
Source reference: /affected/0/versions
0.9.8-1
Source reference: /affected/0/versions
0.9.8-2
Source reference: /affected/0/versions
0.9.9-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-xmldom

Source reference: /affected/1/package/name

Affected versions: 0.9.10-1
Source reference: /affected/1/versions
0.9.10-2
Source reference: /affected/1/versions
0.9.11-1
Source reference: /affected/1/versions
0.9.12-1
Source reference: /affected/1/versions
0.9.6-1
Source reference: /affected/1/versions
0.9.8-1
Source reference: /affected/1/versions
0.9.8-2
Source reference: /affected/1/versions
0.9.9-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-xmldom

Source reference: /affected/2/package/name

Affected versions: 0.9.10-1
Source reference: /affected/2/versions
0.9.10-2
Source reference: /affected/2/versions
0.9.11-1
Source reference: /affected/2/versions
0.9.6-1
Source reference: /affected/2/versions
0.9.8-1
Source reference: /affected/2/versions
0.9.8-2
Source reference: /affected/2/versions
0.9.9-1
Source reference: /affected/2/versions
Fixed versions: 0.9.12-1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-xmldom",
      "purl": "pkg:deb/debian/node-xmldom?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.8.6-1",
      "0.9.10-1",
      "0.9.10-2",
      "0.9.11-1",
      "0.9.12-1",
      "0.9.5-1",
      "0.9.6-1",
      "0.9.8-1",
      "0.9.8-2",
      "0.9.9-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-83609.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-xmldom",
      "purl": "pkg:deb/debian/node-xmldom?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.9.10-1",
      "0.9.10-2",
      "0.9.11-1",
      "0.9.12-1",
      "0.9.6-1",
      "0.9.8-1",
      "0.9.8-2",
      "0.9.9-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-83609.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.9.12-1"
          }
        ]
      }
    ],
    "package": {
      "name": "node-xmldom",
      "purl": "pkg:deb/debian/node-xmldom?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.9.10-1",
      "0.9.10-2",
      "0.9.11-1",
      "0.9.6-1",
      "0.9.8-1",
      "0.9.8-2",
      "0.9.9-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-83609.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58367 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 17:57:21 GMT
Publisher date: Tue, 01 Sep 2026 15:17:38 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-83609 · Revision 1Source updated