xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.
CVE-2026-41675
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, the package allows attacker-controlled processing instruction data to be serialized into XML without validating or neutralizing the PI-closing sequence ?>. As a result, an attacker can terminate the processing instruction early and inject arbitrary XML nodes into the serialized output. This issue has been patched in versions @xmldom/xmldom versions 0.9.10 and 0.8.13.
Assessment
- CVSS
- 8.7 (v4.0)
- Severity
- High
- EPSS
- 0.47% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 7 May 2026
- Last updated
- 28 August 2026
- Weakness
- CWE-91
- Assigner
- security-advisories@github.com
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
At the source
References
- https://github.com/xmldom/xmldom/commit/7207a4b0e0bcc228868075ed991665ef9f73b1c2
- https://github.com/xmldom/xmldom/releases/tag/0.8.13
- https://github.com/xmldom/xmldom/releases/tag/0.9.10
- https://github.com/xmldom/xmldom/security/advisories/GHSA-x6wf-f3px-wcqx
- https://access.redhat.com/errata/RHSA-2026:26234
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/security/cve/CVE-2026-41675
- https://bugzilla.redhat.com/show_bug.cgi?id=2467629
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41675.json
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