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 before 1.42.7, from 1.43.X before 1.43.2.
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History
Mon, 07 Jul 2025 21:15:00 +0000
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cvssV3_1
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Mon, 07 Jul 2025 18:30:00 +0000
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Description | 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 before 1.42.7, from 1.43.X before 1.43.2. | |
Title | CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate via unsanitized i18n messages | |
Weaknesses | CWE-79 | |
References |
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Status: PUBLISHED
Assigner: wikimedia-foundation
Published: 2025-07-07T18:16:33.919Z
Updated: 2025-07-07T20:49:34.393Z
Reserved: 2025-06-30T15:20:44.461Z
Link: CVE-2025-53478

Updated: 2025-07-07T20:49:28.788Z

Status : Received
Published: 2025-07-07T19:15:23.290
Modified: 2025-07-07T21:15:24.920
Link: CVE-2025-53478

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