CVE-2025-61651

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser/checkuser/checkUserHelper/buildUserElement.Js. This issue affects CheckUser: from * before 1.44.1.

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://phabricator.wikimedia.org/T403408	Permissions Required

Configurations

Configuration 1 (hide)

cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:mediawiki:*:*

History

09 Apr 2026, 20:33

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
References	~~() https://phabricator.wikimedia.org/T403408 -~~	() https://phabricator.wikimedia.org/T403408 - Permissions Required
CPE		cpe:2.3:a:mediawiki:checkuser::::::mediawiki::*
Summary		(es) Vulnerabilidad de Neutralización Incorrecta de Entrada Durante la Generación de Páginas Web (XSS o 'cross-site scripting') en Wikimedia Foundation CheckUser. Esta vulnerabilidad está asociada con los archivos de programa modules/ext.CheckUser/checkuser/checkUserHelper/buildUserElement.Js. Este problema afecta a CheckUser: desde * antes de 1.44.1.
First Time		Mediawiki Mediawiki checkuser

03 Feb 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-03 02:16

Updated : 2026-04-09 20:33

NVD link : CVE-2025-61651

Mitre link : CVE-2025-61651

CVE.ORG link : CVE-2025-61651

JSON object : View

Products Affected

mediawiki

checkuser

CWE

CWE-79

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

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