In Grafana, the wrong permission is applied to the alert rule write API endpoint, allowing users with permission to write external alert instances to also write alert rules.
{ "binaries": [ { "binary_name": "grafana", "binary_version": "2.6.0+dfsg-1" }, { "binary_name": "grafana-data", "binary_version": "2.6.0+dfsg-1" } ] }