CVE-2026-83619

xmldom (a pure JavaScript W3C-compliant DOMParser and XMLSerializer module) is vulnerable to a ReDoS (Regular Expression Denial of Service) in versions 0.7.0 through 0.8.15 . The root cause is an unanchored global regex /[ \t\n\r]+$/g in lib/sax.js that trims end-tag names; when an end tag contai...