Description (CNA)
DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| cure53 / DOMPurify | affected 0 before 3.4.12; unaffected 3.4.12 |
CWE
CWE-79
References
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-c2j3-45gr-mqc4
- https://www.vulncheck.com/advisories/dompurify-before-hook-bypass-via-custom-element-handling
ADP enrichment
No English description supplied.