Bug 2436122 (CVE-2025-6594)

Summary: CVE-2025-6594 MediaWiki: MediaWiki: Cross-site Scripting vulnerability via improper input neutralization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MediaWiki. This improper neutralization of input during web page generation, commonly known as Cross-site Scripting (XSS), allows a remote attacker to inject malicious scripts into web pages. This can lead to information disclosure, session hijacking, or arbitrary code execution within the context of the user's browser.
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Bug Depends On: 2436192, 2436191    
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Description OSIDB Bzimport 2026-02-03 00:02:41 UTC
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Special.Apisandbox/ApiSandbox.Js.

This issue affects MediaWiki: from 1.27.0 before 1.39.13, 1.42.7 1.43.2, 1.44.0.