CVE-2026-65912
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductCure53 Dompurify
PublishedJul 23, 2026
First seenJul 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- cure53 dompurify3.3.2 or later
- dompurify3.3.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cure53 dompurify | v < 3.3.2 | 3.3.2 |
| dompurifynpm | v < 3.3.2 | 3.3.2 |
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