XML Injection Affecting @xmldom/xmldom package, versions <0.8.12>=0.9.0 <0.9.9
Threat Intelligence
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Test your applications- Snyk IDSNYK-JS-XMLDOMXMLDOM-15869636
- published1 Apr 2026
- disclosed1 Apr 2026
- creditAli Firas
Introduced: 1 Apr 2026
NewCVE-2026-34601 (opens in a new tab)How to fix?
Upgrade @xmldom/xmldom to version 0.8.12, 0.9.9 or higher.
Overview
@xmldom/xmldom is a javascript ponyfill to provide the following APIs that are present in modern browsers to other runtimes. Since version 0.7.0 this package is published to npm as @xmldom/xmldom and no longer as xmldom
Affected versions of this package are vulnerable to XML Injection via the XMLSerializer() function. An attacker can manipulate the structure and integrity of generated XML documents by injecting attacker-controlled markup containing the CDATA terminator ]]> through CDATA section content, which is not properly validated or sanitized during serialization. This can result in unauthorized XML elements or attributes being inserted, potentially leading to business logic manipulation or privilege escalation in downstream consumers.