CVE-2026-41662

MEDIUM

5.2

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.

CVE Details

CVSS v3.1 Score5.2

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionREQUIRED

Published5/7/2026

Last Modified5/7/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-754

References

https://github.com/Admidio/admidio/releases/tag/v5.0.9(security-advisories@github.com)

https://github.com/Admidio/admidio/security/advisories/GHSA-c7xm-r6vj-8vg6(security-advisories@github.com)

https://github.com/Admidio/admidio/security/advisories/GHSA-c7xm-r6vj-8vg6(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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