---
id: CVE-2026-34384
title: Admidio is an open-source user management solution
summary: >-
  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 …
severity: medium
cvss: 4.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-352
vendor: admidio
product: admidio
affected:
  - admidio < 5.0.8
patched:
  - admidio 5.0.8
published: '2026-03-31'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T22:10:00.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-34384'
references:
  - url: >-
      https://github.com/Admidio/admidio/commit/707171c188b3e8f36007fc3f2bccbfac896ed019
    label: security-advisories@github.com
  - url: 'https://github.com/Admidio/admidio/security/advisories/GHSA-ph84-r98x-2j22'
    label: security-advisories@github.com
  - url: 'https://github.com/Admidio/admidio/security/advisories/GHSA-ph84-r98x-2j22'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00194
epssPercentile: 0.08246
ingestedAt: '2026-10-06T22:23:15.912Z'
---

## Overview

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 < 5.0.8`

## Remediation

Upgrade past the affected range:

- `admidio 5.0.8`