CSRF in Admidio
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Admidio — versions < 5.0.8
Weakness classification (CWE)
References
- github.com/Admidio/admidio/security/advisories/GHSA-ph84-r98x-2j22 (Exploit, Mitigation, Vendor Advisory)
- github.com/Admidio/admidio/commit/707171c188b3e8f36007fc3f2bccbfac896ed019 (Patch)
Frequently asked questions
- What is CVE-2026-34384?
- CVE-2026-34384 is a medium-severity vulnerability in Admidio, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.5/10. Published 2026-03-31.
- How severe is CVE-2026-34384?
- Medium severity. CVSS v3 base score is 4.5 out of 10.