CVE-2025-53479

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-53479
The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism. This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

5.4 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://gerrit.wikimedia.org/r/q/I159e14543912cb3bc7f4a00c3090c0285b154786
https://phabricator.wikimedia.org/T394693
https://phabricator.wikimedia.org/T394693
Configurations

No configuration.

History

10 Jul 2025, 14:15

Type Values Removed Values Added
References () https://phabricator.wikimedia.org/T394693 - () https://phabricator.wikimedia.org/T394693 -
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.4

09 Jul 2025, 11:15

Type Values Removed Values Added
Summary
  • (es) La interfaz Special:CheckUser de la extensión CheckUser es vulnerable a XSS reflejado mediante el mensaje rev-deleted-user. Este mensaje se procesa sin el escape adecuado, lo que permite inyectar JavaScript mediante el mecanismo de anulación del lenguaje uselang=x-xss. Este problema afecta a Mediawiki - extensión CheckUser: desde la versión 1.39.X hasta la 1.39.13, desde la versión 1.42.X hasta la 1.42.7, desde la versión 1.43.X hasta la 1.43.2.
Summary (en) The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2. (en) The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism. This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

08 Jul 2025, 18:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-07-08 18:15

Updated : 2025-07-10 14:15

NVD link : CVE-2025-53479

Mitre link : CVE-2025-53479

CVE.ORG link : CVE-2025-53479

JSON object : View

Products Affected

No product.

CWE
CWE-79

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