Vulnerability Description
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, the package serializes DocumentType node fields (internalSubset, publicId, systemId) verbatim without any escaping or validation. When these fields are set programmatically to attacker-controlled strings, XMLSerializer.serializeToString can produce output where the DOCTYPE declaration is terminated early and arbitrary markup appears outside it. This issue has been patched in versions @xmldom/xmldom versions 0.9.10 and 0.8.13.
Related Weaknesses (CWE)
References
- https://github.com/xmldom/xmldom/commit/372008f9ae0e20fd69f761c7b79e202598267314
- https://github.com/xmldom/xmldom/releases/tag/0.8.13
- https://github.com/xmldom/xmldom/releases/tag/0.9.10
- https://github.com/xmldom/xmldom/security/advisories/GHSA-f6ww-3ggp-fr8h
- https://github.com/xmldom/xmldom/security/advisories/GHSA-f6ww-3ggp-fr8h
FAQ
What is CVE-2026-41674?
CVE-2026-41674 is a documented vulnerability. xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, ...
How severe is CVE-2026-41674?
CVSS scoring is not yet available for CVE-2026-41674. Check NVD for updates.
Is there a patch for CVE-2026-41674?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.