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Vulnerabilities

Vulnerability · CVE-2026-34601

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) and module.

Published Apr 2, 2026 · catalog updated Jul 21, 2026 · xmldom is a pure

Check if you run it

No confirmed exploitation is on record for CVE-2026-34601. EPSS is 0.54%. Act only if a listed version of xmldom is a pure is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (xmldom is a pure).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.54%
Remediation
Advisory link
Affected products
See sources for product scope

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) and 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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-34601

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-34601. EPSS is 0.54%. Act only if a listed version of xmldom is a pure is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-91: XML Injection. EPSS 0.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 2, 2026 · NIST NVD

    Detected

    xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) and 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 spl

  2. Jul 21, 2026 · NIST NVD

    Updated

    xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) and 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 spl

Sources

  • CVE.orgVulnerability recordCVE-2026-34601

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-34601

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-34601

    xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) and 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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.