CVE-2026-49459

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(root, { IN_PLACE: true }) could preserve event-handler attributes on an attacker-controlled <form> root when a descendant name clobbered properties checked by _isClobbered, because _forceRemove no-opped on the parent-less root and _sanitizeAttributes returned early. This issue is fixed in version 3.4.6.

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/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae	Patch
https://github.com/cure53/DOMPurify/releases/tag/3.4.6	Release Notes
https://github.com/cure53/DOMPurify/security/advisories/GHSA-r47g-fvhr-h676	Exploit Mitigation Vendor Advisory
https://github.com/cure53/DOMPurify/security/advisories/GHSA-r47g-fvhr-h676	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-07-14 21:17

Updated : 2026-07-21 19:51

NVD link : CVE-2026-49459

Mitre link : CVE-2026-49459

CVE.ORG link : CVE-2026-49459

JSON object : View

Products Affected

cure53

dompurify

CWE

CWE-79

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

CWE-693

Protection Mechanism Failure

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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