CVE-2026-41672

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.

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EPSS — Exploit Prediction

0.0007

Probability of exploitation

0.23%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-91 CWE-91

References

Other References

https://github.com/xmldom/xmldom/commit/b397540889086da868c30c366ad5c220d1a750c7 https://github.com/xmldom/xmldom/commit/fda7cc313de30243fea35cada64e0bb12099c2a1 https://github.com/xmldom/xmldom/pull/987 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-j759-j44w-7fr8 https://github.com/xmldom/xmldom/security/advisories/GHSA-j759-j44w-7fr8

Frequently Asked Questions

What is CVE-2026-41672? +

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.

How do I check if I'm vulnerable to CVE-2026-41672? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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