DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5.
Exploitability
AV:NAC:LPR:NUI:RScope
S:CImpact
C:HI:LA:N8.2/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:NInjection