Server-side expression parser denial of service
// AI summary
Grafana allows a Viewer role user to crash the server via a crafted server-side math expression causing uncontrolled recursion, with alert rule permissions enabling persistent outages.
// from the source
A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts. Thanks to Mukul Goyal for reporting this vulnerability to us.