CVE-2026-49459 DOMPurify: IN_PLACE mode preserves attributes of a clobbered root element, allowing XSS via attacker-controlled root DOM

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitizeroot, INPLACE: true could preserve event-handler attributes on an attacker-controlled root when a descendant name clobbered properties checked by isClobbered, because forceRemove...