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Vulnerabilities CVE-2026-65913

CVE-2026-65913

Medium
Open
TLP:CLEAR

DOMPurify before 3.3.2 Prototype Pollution via USE_PROFILES

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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.

Details

CVSS Score
5.1
EPSS Score
0.19%

8.3th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Confidence
90%
Published
Jul 23, 2026
Last Modified
Jul 23, 2026
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