CVE-2026-116804 DOMPurify from 3.4.4 before 3.4.17 SAFE_FOR_TEMPLATES Bypass via Shadow Root Content

DOMPurify from 3.4.4 before 3.4.17 contains a SAFEFORTEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURNDOM, RETURNDOMFRAGMENT, or INPLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which mer...