CVE-2025-53479

The MediaWiki - CheckUser extension is vulnerable to reflected Cross-Site Scripting (XSS) via its Special:CheckUser interface. The root cause is the improper escaping of the rev-deleted-user message, which allows for JavaScript injection through the uselang=x-xss language override mechanism. Affe...

CVE-2025-53479 CheckUser: Reflected Cross-Site Scripting (XSS) in Special:CheckUser via unsanitized internationalized message

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 -...

CVE-2025-53480

The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders...

CVE-2025-53480 CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate (Account information tab) via unsanitized i18n messages

The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders...

CVE-2025-53480

The Mediawiki - CheckUser extension contains a reflected cross-site scripting (XSS) vulnerability in the Account information tab of the Special:Investigate page. The root cause is the improper escaping of specific internationalized (i18n) messages. An attacker can exploit this by appending ?usela...

CVE-2025-53480 CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate (Account information tab) via unsanitized i18n messages

The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders...

CVE-2025-53480

The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders...

PT-2025-28474 · Mediawiki · Mediawiki

Name of the Vulnerable Software and Affected Versions: Mediawiki - CheckUser extension versions 1.39.0 through 1.39.12 Mediawiki - CheckUser extension versions 1.42.0 through 1.42.6 Mediawiki - CheckUser extension versions 1.43.0 through 1.43.1 Description: The issue is related to the rendering o...

PT-2025-28632 · Mediawiki · Mediawiki

Name of the Vulnerable Software and Affected Versions: MediaWiki - CheckUser extension versions 1.39.X through 1.39.13 MediaWiki - CheckUser extension versions 1.42.X through 1.42.7 MediaWiki - CheckUser extension versions 1.43.X through 1.43.2 Description: The Special:CheckUser interface is...

Wikimedia Mediawiki - CheckUser Extension 安全漏洞

Wikimedia Mediawiki - CheckUser Extension is a Wikimedia Foundation extension for querying IP addresses. A security vulnerability exists in Wikimedia Mediawiki - CheckUser Extension that stems from a rev-deleted-user message that is not properly escaped, which could lead to a reflected cross-site...

Wikimedia Mediawiki - CheckUser Extension 安全漏洞

Wikimedia Mediawiki - CheckUser Extension is a Wikimedia Foundation extension for checking IP addresses. A security vulnerability exists in Wikimedia Mediawiki - CheckUser Extension, which stems from a specific internationalization message in the Account information tab that is not properly...

CVE-2025-53479: Improper Neutralization of Input During Web Page Generation

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 -...

CVE-2025-53480: Improper Neutralization of Input During Web Page Generation

The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders...

CVE-2025-53478

The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X befor...

CVE-2025-53478 CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate via unsanitized i18n messages

The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X befor...

CVE-2025-53478

The Mediawiki - CheckUser extension is vulnerable to reflected XSS (CWE-79) within the Special:Investigate interface. The root cause is the improper escaping of certain internationalized system messages rendered on the "IPs and User agents" tab. This issue affects versions 1.39.X before 1.39.13, ...

CVE-2025-53478 CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate via unsanitized i18n messages

The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X befor...

Wikimedia Mediawiki - CheckUser Extension 安全漏洞

Wikimedia Mediawiki - CheckUser Extension is a Wikimedia Foundation extension for checking IP addresses. A security vulnerability exists in Wikimedia Mediawiki - CheckUser Extension versions prior to 1.39.13, prior to 1.42.7, and prior to 1.43.2, which stems from improperly escaping messages in t...

PT-2025-28243 · Mediawiki · Mediawiki

Name of the Vulnerable Software and Affected Versions: Mediawiki - CheckUser extension versions 1.39.0 through 1.39.12 Mediawiki - CheckUser extension versions 1.42.0 through 1.42.6 Mediawiki - CheckUser extension versions 1.43.0 through 1.43.1 Description: The CheckUser extension’s...

CVE-2025-53478: Improper Neutralization of Input During Web Page Generation

The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X befor...