Vulnerability · Published May 7, 2026 · Assigned by GitHub_M

CVE-2026-41672xmldom: XML node injection through unvalidated comment serialization

High 7.5

In plain English

A high-severity security flaw in xmldom from xmldom. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 60.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 allows attacker-controlled comment content to be serialized into XML without validating or neutralizing comment-breaking sequences. As a result, an attacker can terminate the comment early and inject arbitrary XML nodes into the serialized output. This issue has been patched in versions @xmldom/xmldom versions 0.9.10 and 0.8.13.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	node-xmldom	no fix listed	DEBIAN-CVE-2026-41672
Debian:13	node-xmldom	no fix listed	DEBIAN-CVE-2026-41672
Debian:14	node-xmldom	0.9.10-1	DEBIAN-CVE-2026-41672
Ubuntu:22.04:LTS	node-xmldom	no fix listed	UBUNTU-CVE-2026-41672
Ubuntu:24.04:LTS	node-xmldom	no fix listed	UBUNTU-CVE-2026-41672
Ubuntu:25.10	node-xmldom	no fix listed	UBUNTU-CVE-2026-41672
Ubuntu:26.04:LTS	node-xmldom	no fix listed	UBUNTU-CVE-2026-41672
Ubuntu:26.10	node-xmldom	no fix listed	UBUNTU-CVE-2026-41672
npm	@xmldom/xmldom	0.9.10	GHSA-j759-j44w-7fr8
npm	@xmldom/xmldom	0.8.13	GHSA-j759-j44w-7fr8
npm	xmldom	no fix listed	GHSA-j759-j44w-7fr8

Affected products (as reported)

Vendor	Product	Versions
xmldom	xmldom	xmldom <= 0.6.0@xmldom/xmldom >= 0.9.0, < 0.9.10@xmldom/xmldom < 0.8.13

Weakness: CWE-91 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

https://github.com/xmldom/xmldom/security/advisories/GHSA-j759-j44w-7fr8 x_refsource_CONFIRM
https://github.com/xmldom/xmldom/pull/987 x_refsource_MISC
https://github.com/xmldom/xmldom/commit/b397540889086da868c30c366ad5c220d1a750c7 x_refsource_MISC
https://github.com/xmldom/xmldom/commit/fda7cc313de30243fea35cada64e0bb12099c2a1 x_refsource_MISC
https://github.com/xmldom/xmldom/releases/tag/0.8.13 x_refsource_MISC
https://github.com/xmldom/xmldom/releases/tag/0.9.10 x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-41672 vdb-entry, x_refsource_REDHAT
RHBZ#2467631 issue-tracking, x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41672.json x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:26234 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60520 vendor-advisory, x_refsource_REDHAT