Web Application Vulnerabilities Runtime SCA Findings
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DOMPurify Incorrect Comparison Vulnerability - CVE-2026-65903 - Vulnerability Database
DOMPurify

DOMPurify Incorrect Comparison Vulnerability - CVE-2026-65903

Medium
Reference: CVE-2026-65903
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2026-65903
Title: DOMPurify Incorrect Comparison Vulnerability
Overview:

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.