CVE-2026-58036 — HIGH (7.5)

Vulnerability 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 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Mediawiki	Mediawiki	1.46.0

Related Weaknesses (CWE)

CWE-200

References

https://phabricator.wikimedia.org/T425406Permissions Required

FAQ

What is CVE-2026-58036?

CVE-2026-58036 is a vulnerability with a CVSS score of 7.5 (HIGH). Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiQueryAllUsers.Php, inc...

How severe is CVE-2026-58036?

CVE-2026-58036 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-58036?

Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.