Vulnerability Description
DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers to bypass attribute filtering by polluting Array.prototype properties. Attackers can set Array.prototype properties like onclick to true, causing DOMPurify to accept event handlers as allowlisted attributes and resulting in DOM-based XSS when sanitized markup is rendered.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cure53 | Dompurify | < 3.3.2 |
Related Weaknesses (CWE)
References
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxvThird Party Advisory
- https://www.vulncheck.com/advisories/dompurify-before-prototype-pollution-via-usThird Party Advisory
FAQ
What is CVE-2026-65913?
CVE-2026-65913 is a vulnerability with a CVSS score of 6.1 (MEDIUM). DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers to bypass attribute filtering by polluting Array.prototype properties. Attackers can set ...
How severe is CVE-2026-65913?
CVE-2026-65913 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-65913?
Check the references section above for vendor advisories and patch information. Affected products include: Cure53 Dompurify.