CVE-2026-34093: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in Wikimedia Foundation MediaWiki
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-34093) in MediaWiki involves exposure of sensitive information due to an issue in the SpecialUserRights.Php program file. It affects multiple versions prior to 1.43.7, 1.44.4, and 1.45.2. The CVSS 4.0 vector indicates network attack vector, low complexity, no privileges required but user interaction needed, and low confidentiality impact. No vendor advisory or patch information is currently provided.
Potential Impact
The impact is limited to unauthorized exposure of sensitive information with a low severity rating (CVSS 1.1). There is no indication of privilege escalation, integrity, or availability impact. No known exploitation in the wild has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Wikimedia Foundation vendor advisory for current remediation guidance. Until an official fix is released, limit exposure by controlling access to affected MediaWiki versions and monitor for updates from the vendor.
CVE-2026-34093: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in Wikimedia Foundation MediaWiki
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-34093) in MediaWiki involves exposure of sensitive information due to an issue in the SpecialUserRights.Php program file. It affects multiple versions prior to 1.43.7, 1.44.4, and 1.45.2. The CVSS 4.0 vector indicates network attack vector, low complexity, no privileges required but user interaction needed, and low confidentiality impact. No vendor advisory or patch information is currently provided.
Potential Impact
The impact is limited to unauthorized exposure of sensitive information with a low severity rating (CVSS 1.1). There is no indication of privilege escalation, integrity, or availability impact. No known exploitation in the wild has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Wikimedia Foundation vendor advisory for current remediation guidance. Until an official fix is released, limit exposure by controlling access to affected MediaWiki versions and monitor for updates from the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-03-25T17:15:46.522Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a021042cbff5d86103d45ca
Added to database: 5/11/2026, 5:22:10 PM
Last enriched: 5/11/2026, 5:38:59 PM
Last updated: 5/12/2026, 3:47:43 AM
Views: 3
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