CVE-2026-41662 json
Admidio: Missing Minimum Administrator Check in Role Membership Removal
published 2026-04-29 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-28276 , GHSA-c7xm-r6vj-8vg6
- cvss
- 5.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist admidio/admidio 5.0.9
- admidio admidio 5.0.9
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Admidio/admidio/security/advisories/GHSA-c7xm-r6vj-8vg6 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:H |
| GitHub | 3.1 | 5.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | admidio/admidio | <5.0.9 |
5.0.9 |
Affected products
- Admidio admidio
Classification
- Weakness
-
- CWE-754 Improper Check for Unusual or Exceptional Conditions
References
Sources
- CVE List CVE-2026-41662
- GitHub Advisory GHSA-c7xm-r6vj-8vg6
- NVD CVE-2026-41662
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.