CVE-2026-21723
CVE-2026-21723 · CVE-2026-21723 Record
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.3 · Medium · EPSS 0.2%
- Published
- Updated
Stack: applications
Affected products and versions
grafana
- Versions
- ≥ 8.0.0, ≤ 11.0.0: Affected (semver)
- ≥ 11.0.0, ≤ 11.6.10: Affected (semver)
- ≥ 12.0.0, ≤ 12.0.9: Affected (semver)
- ≥ 12.1.0, ≤ 12.1.6: Affected (semver)
- ≥ 12.2.0, ≤ 12.2.4: Affected (semver)
- ≥ 12.3.0, ≤ 12.3.2: Affected (semver)
No fix published