medium6.1
CVE-2026-65912
DOMPurify before 3.3.2 contains a URI validation bypass vulnerability when ADD_ATTR is provided as a predicate function via EXTRA_ELEMENT_HANDLING.attributeChe…
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | dompurify | <= 3.3.1 | 3.3.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cure53 | Dompurify | before 3.3.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-cjmm-f4jc-qw8r
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-cjmm-f4jc-qw8r
- https://github.com/cure53/DOMPurify/releases/tag/3.3.2
- https://www.vulncheck.com/advisories/dompurify-before-uri-validation-bypass-via-add-attr