5.3
Medium
CVE-2026-8609 An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory…
Description
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).
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Grafana OSS 13.0 | 13.0.0 → 13.0.1 | No fix stated |
| Grafana OSS 12.4 | 12.4.0 → 12.4.3 | No fix stated |
| Grafana OSS 12.3 | 12.3.0 → 12.3.6 | No fix stated |
| Grafana OSS 12.2 | 12.2.0 → 12.2.8 | No fix stated |
| Grafana OSS 11.6 | 11.6.0 → 11.6.14 | No fix stated |
References
- grafana.com grafana.com
Timeline
- Published
- Last modified
Other CVEs of Grafana OSS
The 45 CVEs of Grafana OSS →
CVE-2026-33379
Dashboard snapshot permission bypass
8.5
High
CVE-2026-79656
OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors
6.0
Medium
CVE-2026-103506
SSO settings authorization bypass
8.9
High
CVE-2026-88858
Server-side expression parser denial of service
6.5
Medium