CVE-2026-83613
Severity not reportedxmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom version 0.6.0 and earlier, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213 security-advisories@github.com
- https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3 security-advisories@github.com
- https://github.com/xmldom/xmldom/pull/1071 security-advisories@github.com
- https://github.com/xmldom/xmldom/pull/1072 security-advisories@github.com
- https://github.com/xmldom/xmldom/releases/tag/0.8.15 security-advisories@github.com
- https://github.com/xmldom/xmldom/releases/tag/0.9.12 security-advisories@github.com
- https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6 security-advisories@github.com
- https://github.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqv 134c704f-9b21-4f2e-91b3-4a467353bcc0