CVE-2026-65914

UNKNOWN 0.0

DOMPurify before 3.3.2 Mutation XSS via Re-Contextualization

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.

CWE	CWE-79
Vendor	cure53
Product	dompurify
Published	Jul 23, 2026
Last Updated	Jul 23, 2026

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Affected Versions

cure53 / DOMPurify

0 < 3.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2 vulncheck.com: https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization

Credits

🔍 researchatfluidattacks caverav tachote