CVE-2026-47423
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5.
- Score
- CVSS 3.1 8.2 High
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-07-14
- Last modified
- 2026-10-24
- Weaknesses
- CWE-79
Affected products
References
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx
- https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea
- https://github.com/cure53/DOMPurify/releases/tag/3.4.5
