CVE-2026-65903

EUVD-2026-48272
DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 25.15%
Affected Products (NVD)
VendorProductVersion
cure53dompurify
𝑥
< 3.4.0
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
node-dompurify
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
References
https://github.com/cure53/DOMPurify/security/advisories/GHSA-39q2-94rc-95cp
https://www.vulncheck.com/advisories/dompurify-before-add-tags-function-bypasses-forbid-tags