CVEvulnerability

CVE-2026-21723

5.3 MEDIUM Published 2026-07-23 Modified 2026-10-24 Official page ↗
Status
Deferred
Published
2026-07-23
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400

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.

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References