A user with the permissions to create a data source can use Grafana API to create a data source with UID set to *. Doing this will grant the user access to read, query, edit and delete all data sources within the organization.
{
"cpes": [
"cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*",
"cpe:2.3:a:grafana:grafana:*:*:*:*:*:go:*:*"
],
"severity": "High"
}