CVE-2026-65903

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

6.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

July 23, 2026

Last Modified

July 23, 2026

CWE ID

CWE-697

Source

NVD

Vendor

cure53

Product

DOMPurify

External 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

CVE-2026-65903

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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