---
cve: "CVE-2026-18571"
severity: "MEDIUM"
cvss: 6.6
epss: "0.3%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-08-02 06:16:42"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T01:51:38+02:00"
---

# CVE-2026-18571

> 6.6 MEDIUM

## Beschreibung

A flaw was found in the user creation component of Keycloak when Fine-Grained Admin Permissions V2 (FGAP V2) is enabled. This issue allows a sub-administrator with permission to create users to add those users to any group, even groups the sub-administrator is not authorized to manage. This could lead to unauthorized access to sensitive information or elevated privileges for the newly created users.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:68277>
- <https://access.redhat.com/errata/RHSA-2026:68278>
- <https://access.redhat.com/security/cve/CVE-2026-18571>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2509759>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18571) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_