node-dompurify: DOMPurify before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttrib...
CVE-2026-65898 is fixed in node-dompurify on 1 platform by DEBIAN-CVE-2026-65898 (version 3.4.12+dfsg-1), released July 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-dompurify · Debian 14 | 3.4.12+dfsg-1 | DEBIAN-CVE-2026-65898 | Jul 24, 2026 |
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