CVE-2026-65914

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.

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-h8r8-wccr-v5f2	Exploit Third Party Advisory
https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization	Third Party Advisory
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*

History

24 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) DOMPurify antes de 3.3.2 contiene una vulnerabilidad de XSS por mutación cuando el HTML saneado se reinserta en contextos de análisis especiales usando innerHTML con envoltorios como script, xmp, iframe, noembed, noframes o noscript. Los atacantes pueden crear cargas útiles con secuencias de cierre que rompen el contexto del envoltorio durante el reanálisis, reactivando marcado peligroso con manejadores de eventos para ejecutar JavaScript.

Information

Published : 2026-07-23 14:18

Updated : 2026-10-24 13:10

NVD link : CVE-2026-65914

Mitre link : CVE-2026-65914

CVE.ORG link : CVE-2026-65914

JSON object : View

Products Affected

cure53

dompurify

CWE

CWE-79

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

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