CVE-2026-47423: DOMPurify XSS via selectedcontent re-clone

June 1, 2026

DOMPurify 3.4.4 allows selectedcontent by default, allowing a chain in which browsers “re-clone” an XSS payload after sanitization, effectively bypassing DOMPurify.

References

github.com/advisories/GHSA-87xg-pxx2-7hvx
github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx
nvd.nist.gov/vuln/detail/CVE-2026-47423

Code Behaviors & Features

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