Bug 2436125 (CVE-2025-6589)

Summary: CVE-2025-6589 MediaWiki: MediaWiki: Low impact information disclosure for highly privileged users
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
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in MediaWiki. An authenticated user with high privileges could potentially exploit a vulnerability related to the `BlockListPager.Php` file. This could lead to a low impact on confidentiality, potentially disclosing limited information.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2436298, 2436301    
Bug Blocks:    

Description OSIDB Bzimport 2026-02-03 00:02:51 UTC
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/specials/pagers/BlockListPager.Php.

This issue affects MediaWiki: >= 1.42.0.