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

EPSS 0.13% · P32
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I. Basic Information for CVE-2025-53479

Vulnerability Information

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Vulnerability Title
CheckUser: Reflected Cross-Site Scripting (XSS) in Special:CheckUser via unsanitized internationalized message
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Wikimedia Mediawiki - CheckUser Extension 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wikimedia Mediawiki - CheckUser Extension是Wikimedia基金会的一个查询IP地址的扩展。 Wikimedia Mediawiki - CheckUser Extension存在安全漏洞,该漏洞源于rev-deleted-user消息未正确转义,可能导致反射型跨站脚本攻击。以下版本受到影响:1.39.13版本之前的1.39.x版本、1.42.7版本之前的1.42.x版本和1.43.2版本之前的1.43.x版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Wikimedia FoundationMediawiki - CheckUser extension 1.42.x ~ 1.42.7 -

II. Public POCs for CVE-2025-53479

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III. Intelligence Information for CVE-2025-53479

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Same Patch Batch · Wikimedia Foundation · 2025-07-08 · 4 CVEs total

CVE-2025-7362MsUpload: Stored Cross-Site Scripting (XSS) via unsanitized msu-continue system message
CVE-2025-7363TitleIcon: Stored Cross-Site Scripting (XSS) via #titleicon_unicode parser function
CVE-2025-53480CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate (Account informatio

IV. Related Vulnerabilities

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