Security Advisory

CVE-2026-21723

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-23 01:48:16

Last updated 2026-07-24 12:23:05

Assigner GRAFANA

CVSS score 5.3

State PUBLISHED

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.

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