CVE-2026-83616 xmldom: Processing Instruction Target Injection Bypasses requireWellFormed

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom version 0.6.0 and earlier, Document.createProcessingInstructiontarget, data in lib/dom.js accepts an unvalidated target, while...