CVE-2026-58024: 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/Api/ApiUserrights.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
AI Analysis
Technical Summary
This vulnerability in MediaWiki involves exposure of sensitive information to unauthorized actors, classified under CWE-200. It is associated with the ApiUserrights.php file and affects multiple versions of MediaWiki prior to 1.43.9, 1.44.6, 1.45.4, and 1.46.0. The CVSS 4.0 base score is 5.1, indicating medium severity. There is no vendor advisory or patch information available at this time, and no known exploits in the wild have been reported.
Potential Impact
Unauthorized actors may gain access to sensitive information due to this vulnerability. The impact is limited to information disclosure without elevation of privileges or integrity/availability impact. The medium CVSS score reflects a moderate risk of sensitive data exposure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider restricting access to the affected API endpoints and monitoring for suspicious activity related to user rights management.
CVE-2026-58024: 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/Api/ApiUserrights.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVSS v4.0
Score 5.1medium
Affected software
pkg:github/wikimedia/mediawikiRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in MediaWiki involves exposure of sensitive information to unauthorized actors, classified under CWE-200. It is associated with the ApiUserrights.php file and affects multiple versions of MediaWiki prior to 1.43.9, 1.44.6, 1.45.4, and 1.46.0. The CVSS 4.0 base score is 5.1, indicating medium severity. There is no vendor advisory or patch information available at this time, and no known exploits in the wild have been reported.
Potential Impact
Unauthorized actors may gain access to sensitive information due to this vulnerability. The impact is limited to information disclosure without elevation of privileges or integrity/availability impact. The medium CVSS score reflects a moderate risk of sensitive data exposure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider restricting access to the affected API endpoints and monitoring for suspicious activity related to user rights management.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-06-27T13:32:37.577Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45341727e9c79719b998f9
Added to database: 07/01/2026, 15:36:55 UTC
Last enriched: 07/10/2026, 10:03:01 UTC
Last updated: 08/16/2026, 02:32:35 UTC
Views: 85
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