DOMPurify XSS via `selectedcontent` re-clone
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.2epss 0.4%
from disclosure to weapon0 days
Published on NVDJul 14
1st PoCJun 3
exploitation probability
0.4%top 66% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Affected products
cure53 · DOMPurifypublic PoCs found — 1
githubgithub.com/Galaxy-sc/CVE-2026-47423-dompurify-xss-detector★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.