Bug 2436108 (CVE-2025-6927)

Summary: CVE-2025-6927 MediaWiki: MediaWiki: Information disclosure via block list handling
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MediaWiki, specifically within the handling of block lists via `BlockListPager.Php` and `ApiQueryBlocks.Php`. A remote attacker could exploit this vulnerability with user interaction to achieve low confidentiality impact, potentially disclosing limited information related to block lists.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2436203, 2436204    
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Description OSIDB Bzimport 2026-02-03 00:01:51 UTC
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php, includes/api/ApiQueryBlocks.Php.

This issue affects MediaWiki: from >= 1.42.0 before 1.39.13, 1.42.7 1.43.2, 1.44.0.