CVE-2026-47423

EUVD-2026-44443
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 33.79%
Affected Products (NVD)
VendorProductVersion
cure53dompurify
3.4.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
node-dompurify
bookworm
vulnerable
bookworm (security)
vulnerable
forky
3.4.13+dfsg-2
fixed
sid
3.4.13+dfsg-2
fixed
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
dompurify.js
bionic
needs-triage
jammy
dne
noble
dne
resolute
dne
xenial
needs-triage
node-dompurify
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
References
https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea
https://github.com/cure53/DOMPurify/releases/tag/3.4.5
https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx
https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx