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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-ph84-r98x-2j22 Admidio has Missing CSRF Protection on Registration Approval Actions
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 01 Apr 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Admidio
Admidio admidio
CPEs cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*
Vendors & Products Admidio
Admidio admidio
Metrics ssvc

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


Wed, 01 Apr 2026 02:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Admidio: Missing CSRF Protection on Registration Approval Actions
Weaknesses CWE-352
References
Metrics cvssV3_1

{'score': 4.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-01T15:53:47.600Z

Reserved: 2026-03-27T13:45:29.619Z

Link: CVE-2026-34384

cve-icon Vulnrichment

Updated: 2026-04-01T15:48:47.412Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-31T21:16:30.503

Modified: 2026-04-01T18:31:30.673

Link: CVE-2026-34384

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses