DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.
0.7.3~dfsg1-10.7.3~dfsg1-20.9.0~dfsg1-10.9.0~dfsg1-2Exploitability
AV:NAC:LPR:NUI:RScope
S:CImpact
C:LI:LA:NCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N