CVE-2026-65914

EUVD-2026-48277
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
cure53dompurify
𝑥
< 3.3.2
CNA
Debian logo
Debian Releases
Debian Product
Codename
node-dompurify
bookworm
vulnerable
bookworm (security)
vulnerable
forky
3.4.12+dfsg-1
fixed
sid
3.4.12+dfsg-1
fixed
trixie
vulnerable
Common Weakness Enumeration
References
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2