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:
An Organization administrator exists
The Server administrator is either:
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.
{ "severity": "Medium", "cpes": [ "cpe:2.3:a:grafana:grafana:*:*:*:*:*:go:*:*" ] }