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.
{ "binaries": [ { "binary_name": "grafana", "binary_version": "2.6.0+dfsg-1" }, { "binary_name": "grafana-data", "binary_version": "2.6.0+dfsg-1" } ] }
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88858.json"