DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/cure53/DOMPurify/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae Patch
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8 Exploit, Mitigation, Vendor Advisory
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8 Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.1 · cure53NVD modified 2026-10-24 21:10
Affected (CPE criteria) 1
cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*
References 4
- https://github.com/cure53/DOMPurify/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae Patch
- https://github.com/cure53/DOMPurify/releases/tag/3.4.6 Release Notes
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8 Exploit, Mitigation, Vendor Advisory
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8 Exploit, Mitigation, Vendor Advisory