5.3
Medium
CVE-2026-21723 The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test) can execute…
Description
The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test) can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with anonymous access enabled.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Grafana OSS 12.3 | 12.3.0 → 12.3.2 | No fix stated |
| Grafana OSS 12.2 | 12.2.0 → 12.2.4 | No fix stated |
| Grafana OSS 12.1 | 12.1.0 → 12.1.6 | No fix stated |
| Grafana OSS 12.0 | 12.0.0 → 12.0.9 | No fix stated |
| Grafana OSS 11.0 | 11.0.0 → 11.6.10 | No fix stated |
| Grafana OSS 8.0 | 8.0.0 → 11.0.0 | No fix stated |
References
- grafana.com grafana.com
Timeline
- Published
- Last modified
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