Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. (CVE-2026-58024)
Description
A vulnerability in Wikimedia Foundation MediaWiki allows exposure of sensitive information to unauthorized actors. The issue is linked to the file includes/Api/ApiUserrights.Php and affects multiple versions of MediaWiki prior to 1.46.0, including specific 1.43.x, 1.44.x, and 1.45.x releases. The vulnerability has a medium severity with a CVSS score of 5.7.
CVSS v3.1
Score 5.7medium
Affected software
pkg:deb/ubuntu/mediawiki?arch=source&distro=bionicpkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/mediawiki?arch=source&distro=questingpkg:deb/ubuntu/mediawiki?arch=source&distro=stonkingpkg:deb/ubuntu/mediawiki?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-58024 is an information exposure vulnerability in MediaWiki, specifically related to the includes/Api/ApiUserrights.Php program file. It affects MediaWiki versions before 1.46.0, including 1.45.4, 1.44.6, and 1.43.9. The vulnerability allows unauthorized actors to access sensitive information. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requires privileges and user interaction, and impacts confidentiality with no impact on integrity or availability.
Potential Impact
The vulnerability allows unauthorized actors to gain access to sensitive information, potentially compromising confidentiality. There is no impact on integrity or availability. The medium CVSS score reflects a moderate risk level due to the need for privileges and user interaction for exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no explicit patch or official fix information is provided, users should monitor official MediaWiki advisories for updates and apply patches once available. Until then, restrict access to affected components and review user privileges to minimize exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-58024
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f5df2cdf04f656663482
Added to database: 10/17/2026, 22:25:35 UTC
Last enriched: 10/18/2026, 00:34:04 UTC
Last updated: 10/18/2026, 00:34:04 UTC
Views: 3
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