CVE-2026-41662

Admidio: Missing Minimum Administrator Check in Role Membership Removal

Published May 7, 2026 CVSS 3.1 · 5.2 Medium EPSS < 1% KEV · Not listed
Description
Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership() does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership() contains this safety check, but the current code path bypasses it. Any administrator can remove the last remaining other administrator, locking the entire system out of administrative access. The exploit does not require concurrent requests; sequential removals produce the same result. This issue has been patched in version 5.0.9.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-c7xm-r6vj-8vg6 Admidio Missing Minimum Administrator Check in Role Membership Removal
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Admidio
Admidio admidio
Vendors & Products Admidio
Admidio admidio
Type Values Removed Values Added
Description Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership() does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership() contains this safety check, but the current code path bypasses it. Any administrator can remove the last remaining other administrator, locking the entire system out of administrative access. The exploit does not require concurrent requests; sequential removals produce the same result. This issue has been patched in version 5.0.9.
Title Admidio: Missing Minimum Administrator Check in Role Membership Removal
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 5.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 7, 2026, 2:06 PM
Reserved
Apr 21, 2026, 11:58 PM
Status
Deferred
Published
May 7, 2026, 4:16 AM
Modified
Jun 17, 2026, 10:46 AM