XPath Injection in Xmldom

CVE-2026-41674

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (49.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-41674: held from 0.005 to 0.006.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.002

Affected products

  • Xmldom — versions xmldom <= 0.6.0, @xmldom/xmldom >= 0.9.0, < 0.9.10, @xmldom/xmldom < 0.8.13

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-41674?
CVE-2026-41674 is a high-severity vulnerability in Xmldom, classified under XML Injection (Blind XPath Injection). CVSS score: 7.5/10. Published 2026-05-07.
How severe is CVE-2026-41674?
High severity. CVSS v3 base score is 7.5 out of 10.