Description (CNA)
DOMPurify before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements, then submit untrusted content that inherits the polluted allowlist and executes event handlers as stored XSS.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| cure53 / DOMPurify | affected 0 before 3.4.11; unaffected 3.4.11 |
CWE
CWE-79
References
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-cmwh-pvxp-8882
- https://www.vulncheck.com/advisories/dompurify-before-permanent-attribute-allowlist-pollution-via-setconfig
ADP enrichment
No English description supplied.