PT-2026-34604 · Dompurify · Dompurify
CVSS v2.0
6.4
Medium
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:N |
Name of the Vulnerable Software and Affected Versions
DOMPurify versions prior to 3.4.0
Description
An inconsistency exists between the handling of
FORBID TAGS and FORBID ATTR when a function-based ADD TAGS configuration is used. Specifically, when the EXTRA ELEMENT HANDLING.tagCheck function returns true, a short-circuit evaluation occurs that bypasses the FORBID TAGS check. This allows forbidden elements, such as iframe, object, embed, and form, to bypass sanitization and remain in the output with their attributes intact.Recommendations
Update to version 3.4.0.
Exploit
Fix
XSS
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Related Identifiers
Affected Products
Dompurify