CVE-2026-8609 — Pre-authentication denial of service via the OAuth login route
An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the …
Published: 2026-07-10 · CVSS: 5.3 · CVSS 3.1
An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7