CVE-2026-65912

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 3.3.2 contains a URI validation bypass vulnerability when ADD_ATTR is provided as a predicate function via EXTRA_ELEMENT_HANDLING.attributeCheck. Attackers can supply a predicate that accepts specific attribute and tag combinations to bypass URI-safe validation, allowing unsafe protocols like javascript: to survive sanitization and execute as DOM-based XSS when the link is activated.

Vulnerability Details

Published Date

July 23, 2026

Last Modified

July 23, 2026

CWE ID

CWE-79

Source

NVD

Vendor

cure53

Product

DOMPurify

External References

https://github.com/cure53/DOMPurify/security/advisories/GHSA-cjmm-f4jc-qw8r
https://www.vulncheck.com/advisories/dompurify-before-uri-validation-bypass-via-add-attr

CVE-2026-65912

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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