CVE-2026-83605 xmldom: Attribute name injection via setAttribute() bypasses requireWellFormed

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Element.setAttribute calls the private createAttributename path without validating the attribute nam...