CVE-2026-21723
Last modified
CVE-2026-21723 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Grafana OSS | >= 8.0.0, <= 11.0.0; >= 11.0.0, <= 11.6.10; >= 12.0.0, <= 12.0.9; >= 12.1.0, <= 12.1.6; >= 12.2.0, <= 12.2.4; >= 12.3.0, <= 12.3.2 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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