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CVE-2026-65903

MEDIUM CVSS: 6.1 Published: 2026-07-23 Modified: 2026-07-28

Description

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.

Affected Platforms

Cure53 Dompurify

Weakness Type

CWE-697

References