---
cve: "CVE-2026-34384"
severity: "MEDIUM"
cvss: 4.5
epss: "17%"
vendor: "Admidio"
kev: false
exploited: false
published: "2026-03-31 21:16:30"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T07:50:55+02:00"
---

# CVE-2026-34384

> 4.5 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 3833691ef1746e92b0e009dace220049caa65806 (Commit)
- 707171c188b3e8f36007fc3f2bccbfac896ed019 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-34384) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_