An access control vulnerability was discovered in Grafana OSS where an Organization administrator could permanently delete the Server administrator account. This vulnerability exists in the DELETE /api/org/users/ endpoint.
The vulnerability can be exploited when:
1. An Organization administrator exists
2. The Server administrator is either:
- Not part of any organization, or - Part of the same organization as the Organization administrator Impact:
- Organization administrators can permanently delete Server administrator accounts
- If the only Server administrator is deleted, the Grafana instance becomes unmanageable
- No super-user permissions remain in the system
- Affects all users, organizations, and teams managed in the instance
The vulnerability is particularly serious as it can lead to a complete loss of administrative control over the Grafana instance.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade grafanaUpgrade grafana9Upgrade grafana8 | Jun 20, 2025 | May 23, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 23, 2025 |
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