CVE-2026-34384

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.

CVSS 3.1

7.3CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

CWE

CWE-352

Published

2026-03-31

Modified

2026-10-06

Record from

the NVD, synced 2026-10-19

Affected

• admidio:admidio

References

• https://github.com/Admidio/admidio/commit/707171c188b3e8f36007fc3f2bccbfac896ed019
• https://github.com/Admidio/admidio/security/advisories/GHSA-ph84-r98x-2j22
• https://github.com/Admidio/admidio/security/advisories/GHSA-ph84-r98x-2j22

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