Vulnerability Advisory : DOMPurify before 3.4.17 DOM XSS via IN_PLACE Hook-Detached Subtrees with LOW Attack Complexity

DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to keep event handlers armed when an IN_PLACE hook removes a parent or sibling node. Attacker markup in detached subtrees is never walked or neutralized, so handlers like img onerror fire after sanitize() returns, causing DOM XSS.