CVE-2026-21723

Published: Lug 22, 2026 Last Modified: Lug 22, 2026
ExploitDB:
Other exploit source:
Google Dorks:

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.