CVE-2026-116804

DOMPurify from 3.4.4 before 3.4.17 contains a SAFE_FOR_TEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which merge after removal and are evaluated by downstream template engines for cross-site scripting.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/cure53/DOMPurify/security/advisories/GHSA-cg2g-xh64-v4q7
https://www.vulncheck.com/advisories/dompurify-from-3.4.4-before-3.4.17-safe-for-templates-bypass-via-shadow-root-content
https://github.com/cure53/DOMPurify/security/advisories/GHSA-cg2g-xh64-v4q7

Configurations

No configuration.

History

02 Nov 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://github.com/cure53/DOMPurify/security/advisories/GHSA-cg2g-xh64-v4q7 -~~	() https://github.com/cure53/DOMPurify/security/advisories/GHSA-cg2g-xh64-v4q7 -

27 Oct 2026, 00:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-27 00:17

Updated : 2026-11-02 19:17

NVD link : CVE-2026-116804

Mitre link : CVE-2026-116804

CVE.ORG link : CVE-2026-116804

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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