CVE-2026-21723 Record (Grafana Grafana OSS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GRAFANA
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | GRAFANA |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · security@grafana.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-47869
- GCVE · GCVE-0-2026-21723
Affected products
| Product | Versions |
|---|---|
| Grafana · Grafana OSS | affected 8.0.0 ≤ 11.0.0 ; affected 11.0.0 ≤ 11.6.10 ; affected 12.0.0 ≤ 12.0.9 ; affected 12.1.0 ≤ 12.1.6 ; affected 12.2.0 ≤ 12.2.4 ; affected 12.3.0 ≤ 12.3.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |