CVE-2026-21723 (GCVE-0-2026-21723)
Vulnerability from cvelistv5
Published
2026-07-23 01:48
Modified
2026-08-27 17:22
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Grafana | Grafana OSS |
Version: 8.0.0 ≤ 11.0.0 Version: 11.0.0 ≤ 11.6.10 Version: 12.0.0 ≤ 12.0.9 Version: 12.1.0 ≤ 12.1.6 Version: 12.2.0 ≤ 12.2.4 Version: 12.3.0 ≤ 12.3.2 |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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