Medium severity · published Jul 23, 2026
CVE-2026-65913
DOMPurify before 3.3.2 Prototype Pollution via USE_PROFILES
6.1
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DO
DOMPurify · cure53
before 3.3.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65913
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-65913
vendor-advisory
https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxv
third-party-advisory
https://www.vulncheck.com/advisories/dompurify-before-prototype-pollution-via-use-profiles
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