The Snowflake datasource allows for GET/PUT commands, which can allow any user with access to run queries against the data source to read/write files between the local grafana server and the connected Snowflake host.
Exploitability
AV:NAC:LPR:LUI:NScope
S:CImpact
C:HI:HA:N9.6/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N