cvedb.io
CVE-2026-34601
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-04-02T18:16:31.933 · Last modified 2026-06-30T03:18:56.800

Summary

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator ]]> to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain text-only became active XML markup in the serialized output, enabling XML structure injection and downstream business-logic manipulation. This issue has been patched in xmldom version 0.6.0 and @xmldom/xmldom versions 0.8.12 and 0.9.9.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.