The snapshot feature in Grafana 6.7.3 through 7.4.1 can allow an unauthenticated remote attackers to trigger a Denial of Service via a remote API call if a commonly used configuration is set.
https://security.netapp.com/advisory/ntap-20210513-0007/
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-2/
https://github.com/grafana/grafana/blob/master/CHANGELOG.md#742-2021-02-17