PT-2026-63989

CVE-2026-65903

Published

2026-04-16

Updated

2026-10-06

Description by

CVSS 3.1

6.1

Medium

MetricsAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions DOMPurify versions prior to 3.4.0

Description A logic error exists in the ADD TAGS function where short-circuit evaluation allows tags listed in FORBID TAGS to bypass restrictions. This occurs when tags are simultaneously listed in both FORBID TAGS and added via the ADD TAGS function, resulting in the forbidden tags being retained in the sanitized output.

Recommendations Update to version 3.4.0 or later.

Exploitability

Exploit

Fix

Vendors

Affected products

Weakness enumeration

CWE-783: Operator Precedence Logic Error

CWE-697: Incorrect Comparison

Related identifiers

CVE-2026-65903

GHSA-39Q2-94RC-95CP