Bug 2436168 (CVE-2025-11261)

Summary: CVE-2025-11261 MediaWiki: MediaWiki: Cross-site Scripting (XSS) vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MediaWiki. This vulnerability, known as Cross-site Scripting (XSS), occurs due to improper neutralization of input during web page generation. A remote attacker could exploit this by injecting malicious scripts into web pages. Successful exploitation could lead to arbitrary code execution in the user's browser, information disclosure, or session hijacking.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2436209, 2436210    
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Description OSIDB Bzimport 2026-02-03 01:01:35 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.Language/mediawiki.Language.Js.

This issue affects MediaWiki: from * before 1.39.15, 1.43.5, 1.44.2.