CVE-2026-83605

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Element.setAttribute() calls the private _createAttribute(name) path without validating the attribute name, while Document.createAttribute(name) validates against QName. XMLSerializer.serializeToString() emits attribute names verbatim, and requireWellFormed: true did not validate them, so a crafted name can terminate the intended attribute and inject additional attributes, including event handlers, into browser-consumed output; synthesized xmlns:PREFIX declarations expose the same unchecked-name boundary. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; no fixed version is available for xmldom.

CVSS

No CVSS.

References

Link	Resource
https://github.com/xmldom/xmldom/commit/cba1321218b069182695813fa7565653708e172e
https://github.com/xmldom/xmldom/commit/d8212e632507eaf1d9f609657dd4c56abeb12d44
https://github.com/xmldom/xmldom/pull/1043
https://github.com/xmldom/xmldom/pull/1050
https://github.com/xmldom/xmldom/releases/tag/0.8.14
https://github.com/xmldom/xmldom/releases/tag/0.9.11
https://github.com/xmldom/xmldom/security/advisories/GHSA-4w3w-2rp5-g8jm
https://github.com/xmldom/xmldom/security/advisories/GHSA-4w3w-2rp5-g8jm

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 15:17

Updated : 2026-09-08 21:11

NVD link : CVE-2026-83605

Mitre link : CVE-2026-83605

CVE.ORG link : CVE-2026-83605

JSON object : View

Products Affected

No product.

CWE

CWE-91

XML Injection (aka Blind XPath Injection)

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