CVE-2026-21723 — CVE-2026-21723 Record
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 shor…
Published: 2026-07-23 · CVSS: 5.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7