CVE-2026-41674

Name	CVE-2026-41674
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-xmldom (PTS)	bullseye	0.5.0-1+deb11u2	vulnerable
	bookworm	0.8.6-1	vulnerable
	trixie	0.9.6-1	vulnerable
	forky	0.9.9-1	vulnerable
	sid	0.9.10-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-xmldom	source	(unstable)	0.9.10-1

Notes

[trixie] - node-xmldom <no-dsa> (Minor issue)
[bookworm] - node-xmldom <no-dsa> (Minor issue)
[bullseye] - node-xmldom <postponed> (Minor issue)
https://github.com/xmldom/xmldom/security/advisories/GHSA-f6ww-3ggp-fr8h
https://github.com/xmldom/xmldom/commit/372008f9ae0e20fd69f761c7b79e202598267314 (0.9.10)