A user with Editor permissions can place a malicious script in the attribution field of a Geomap panel's XYZ tile layer via a template variable. The script then executes in the browser of any user who views the affected dashboard (stored cross-site scripting).
Exploitability
AV:NAC:LPR:LUI:RScope
S:UImpact
C:HI:HA:N7.3/CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:NInjection