A flaw was found in grafana. This issue occurs when sending an API call to the /ds/query or public dashboard query endpoint that has mixed queries, such as having two or more distinct data sources in one API call. As a result, the Grafana instance will crash. Currently, the only feature that uses mixed queries within Grafana is public dashboards, but it is also possible to trigger this issue by calling the API directly. If public dashboards are enabled, reproduction requires a public dashboard to be under a heavy load. If public dashboards are disabled, reproduction only occurs when the /ds/query endpoint with a mixed query payload is under a heavy load with a load testing script.
#### Mitigation

Block mixed query requests and patch to disable mixed query concurrent callsRead More