CVE-2026-41240

N/A

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Versions prior to 3.4.0 have an inconsistency between FORBID_TAGS and FORBID_ATTR handling when function-based ADD_TAGS is used. Commit c361baa added an early exit for FORBID_ATTR at line 1214. The same fix was not applied to FORBID_TAGS. At line 1118-1123, when EXTRA_ELEMENT_HANDLING.tagCheck returns true, the short-circuit evaluation skips the FORBID_TAGS check entirely. This allows forbidden elements to survive sanitization with their attributes intact. Version 3.4.0 patches the issue.

Details CVE

Score CVSS v3.1N/A

Publie4/23/2026

Derniere modification4/24/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-79CWE-183

References

https://github.com/cure53/DOMPurify/commit/c361baa18dbdcb3344a41110f4c48ad85bf48f80(security-advisories@github.com)

https://github.com/cure53/DOMPurify/releases/tag/3.4.0(security-advisories@github.com)

https://github.com/cure53/DOMPurify/security/advisories/GHSA-h7mw-gpvr-xq4m(security-advisories@github.com)

https://github.com/cure53/DOMPurify/security/advisories/GHSA-h7mw-gpvr-xq4m(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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