Bug 2436145 (CVE-2025-61638)

Summary: CVE-2025-61638 MediaWiki: MediaWiki: Cross-site Scripting (XSS) via improper input neutralization
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, identified as Cross-site Scripting (XSS), allows a remote attacker to inject malicious scripts into web pages due to improper neutralization of input during web page generation. When a user views an affected page, the malicious code can execute in their browser, potentially leading to information disclosure or unauthorized actions.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2436272, 2436273    
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Description OSIDB Bzimport 2026-02-03 00:03:55 UTC
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Parsoid. This vulnerability is associated with program files includes/parser/Sanitizer.Php, src/Core/Sanitizer.Php.

This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1; Parsoid: from * before 0.16.6, 0.20.4, 0.21.1.