CVE-2026-58036: 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/ApiQueryAllUsers.Php, includes/Api/ApiQueryUsers.Php, includes/Permissions/PermissionManager.Php, includes/User/UserGroupManager.Php.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58036) in MediaWiki 1.46.0-rc.0 relates to CWE-200, which is the exposure of sensitive information to unauthorized actors. It affects components handling API queries for users and permissions, specifically the files includes/Api/ApiQueryAllUsers.Php, includes/Api/ApiQueryUsers.Php, includes/Permissions/PermissionManager.Php, and includes/User/UserGroupManager.Php. The CVSS 4.0 vector indicates network attack vector with high attack complexity, low privileges required, and partial user interaction. The vulnerability does not involve integrity or availability impacts. No patch or official remediation level has been published by the vendor as of now.
Potential Impact
The vulnerability allows unauthorized actors to gain access to sensitive information within MediaWiki 1.46.0-rc.0. Given the low CVSS score (2.1) and the nature of the CWE-200 classification, the impact is limited to information disclosure without affecting system integrity or availability. There are no known exploits in the wild, reducing immediate risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the Wikimedia Foundation advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor vendor communications for updates. No specific mitigation steps are documented at this time.
CVE-2026-58036: 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/ApiQueryAllUsers.Php, includes/Api/ApiQueryUsers.Php, includes/Permissions/PermissionManager.Php, includes/User/UserGroupManager.Php.
CVSS v4.0
Score 2.1low
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 (CVE-2026-58036) in MediaWiki 1.46.0-rc.0 relates to CWE-200, which is the exposure of sensitive information to unauthorized actors. It affects components handling API queries for users and permissions, specifically the files includes/Api/ApiQueryAllUsers.Php, includes/Api/ApiQueryUsers.Php, includes/Permissions/PermissionManager.Php, and includes/User/UserGroupManager.Php. The CVSS 4.0 vector indicates network attack vector with high attack complexity, low privileges required, and partial user interaction. The vulnerability does not involve integrity or availability impacts. No patch or official remediation level has been published by the vendor as of now.
Potential Impact
The vulnerability allows unauthorized actors to gain access to sensitive information within MediaWiki 1.46.0-rc.0. Given the low CVSS score (2.1) and the nature of the CWE-200 classification, the impact is limited to information disclosure without affecting system integrity or availability. There are no known exploits in the wild, reducing immediate risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the Wikimedia Foundation advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor vendor communications for updates. No specific mitigation steps are documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-06-27T13:32:41.613Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45341727e9c79719b99914
Added to database: 07/01/2026, 15:36:55 UTC
Last enriched: 07/01/2026, 15:52:47 UTC
Last updated: 07/02/2026, 02:19:15 UTC
Views: 14
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