CVE-2026-65913

MEDIUM

DOMPurify before 3.3.2 Prototype Pollution via USE_PROFILES

Title source: cna

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.

References (2)

Core 2

Core References

Vendor Advisory vendor-advisory

GitHub Security Advisory (GHSA-cj63-jhhr-wcxv)

https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxv

Third Party Advisory third-party-advisory

VulnCheck Advisory: DOMPurify before 3.3.2 Prototype Pollution via USE_PROFILES

https://www.vulncheck.com/advisories/dompurify-before-prototype-pollution-via-use-profiles

Scores

CVSS v3 6.1

EPSS 0.0019

EPSS Percentile 8.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-1321

Status published

Products (4)

cure53/DOMPurify < 3.3.2

cure53/dompurify < 3.3.2

cure53/DOMPurify 3.3.2

npm/dompurify 0 - 3.3.2npm

Published Jul 23, 2026

Tracked Since Jul 23, 2026