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

DOMPurify Incorrect Comparison Vulnerability (CVE-2026-65903)

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.

References

CVE-2026-65903

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Severity

Medium

Classification

CVE-2026-65903
CWE-697
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Tags

Missing Update
Known Vulnerabilities