CVE-2026-65913

MEDIUM 6.1

DOMPurify before 3.3.2 Prototype Pollution via USE_PROFILES

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-1321
Vendor	cure53
Product	dompurify
Published	Jul 23, 2026
Last Updated	Jul 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

cure53 / DOMPurify

0 < 3.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxv vulncheck.com: https://www.vulncheck.com/advisories/dompurify-before-prototype-pollution-via-use-profiles

Credits

🔍 christos-eth