CVE-2026-34384 Admidio: Missing CSRF Protection on Registration Approval Actions
Attackers can trick authorized users into approving pending registrations via crafted GET requests, bypassing manual approval workflows.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-34384?
CVE-2026-34384 is a medium-severity vulnerability in admidio, published on 31 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2026-34384?
2 open source packages ship an affected version, including admidio/admidio. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
admidio/admidio Packagist | All versions | 5.0.8 |
admidio/admidio Packagist | All versions | 5.0.8 |
Products include Admidio Admidio.
How do I fix CVE-2026-34384?
Upgrade admidio/admidio to 5.0.8 or later.
Is CVE-2026-34384 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34384 exists.
Other vulnerabilities in admidio
- CVE-2024-37906 Admidio has Blind SQL Injection in ecard_send.php
- CVE-2021-32630 Various
- CVE-2026-32817 Admidio is Missing Authorization and CSRF Protection on Document and Folder Deletion
- CVE-2024-38529 Admidio Vulnerable to RCE via Arbitrary File Upload in Message Attachment
- CVE-2026-32756 Admidio: Unrestricted File Upload via CSRF Token Validation Bypass in Documents & Files Module
Sources
Also known as GHSA-ph84-r98x-2j22.