CVE-2026-34384
Admidio: Missing CSRF Protection on Registration Approval Actions
Admidio is an open-source user management solution. Prior to version 5.0.8, the create_user, assign_member, and assign_user action modes in modules/registration.php approve pending user registrations via GET request without validating a CSRF token. Unlike the delete_user mode in the same file (which correctly validates the token), these three approval actions read their parameters from $_GET and perform irreversible state changes without any protection. An attacker who has submitted a pending registration can extract their own user UUID from the registration confirmation email URL, then trick any user with the rol_approve_users right into visiting a crafted URL that automatically approves the registration. This bypasses the manual registration approval workflow entirely. This issue has been patched in version 5.0.8.
- Affected
- Admidio · admidio
- CVSS v3.1 NVD
- 7.3 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - CVSS v3.1 GITHUB
- 4.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N - EPSS
- 0.19% chance of exploitation in the next 30 days, 9th percentile
- Published
- 2026-03-31
- Updated
- 2026-04-01
Proof-of-concept exploits (1)
Security advisories
- Admidio/admidio/security/advisories/GHSA-ph84-r98x-2j22
- Admidio/admidio/commit/707171c188b3e8f36007fc3f2bccbfac896ed019