CVE-2026-83617

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.11 until 0.9.12, the requireWellFormed: true element and attribute name checks use the anchored QName_exact expression produced by reg() in lib/grammar.js, which inherits the multiline flag. A name with a valid first line followed by U+000A, U+000D, U+2028, or U+2029 and breakout markup therefore passes validation and is emitted verbatim in element start and end tags or attribute names. This bypasses the strict-serialization checks introduced for the earlier element-name and attribute-name injection advisories, while the default serialization path remains outside the strict guarantee. This issue is fixed in @xmldom/xmldom version 0.9.12.

CVSS

No CVSS.

References

Link	Resource
https://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362
https://github.com/xmldom/xmldom/pull/1071
https://github.com/xmldom/xmldom/releases/tag/0.9.12
https://github.com/xmldom/xmldom/security/advisories/GHSA-jxjr-3g7g-3944
https://github.com/xmldom/xmldom/security/advisories/GHSA-jxjr-3g7g-3944

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 15:17

Updated : 2026-09-08 21:11

NVD link : CVE-2026-83617

Mitre link : CVE-2026-83617

CVE.ORG link : CVE-2026-83617

JSON object : View

Products Affected

No product.

CWE

CWE-91

XML Injection (aka Blind XPath Injection)

CWE-625

Permissive Regular Expression

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