6.5
Medium
CVE-2026-33378 Using the $__timeGroup macro, one can achieve an OOM by overloading the server
Description
Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. If the server is set up to auto-restart, the impact is minimal or non-existent, as the attack can take upwards of half an hour to crash the server.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Grafana OSS 13.0 | earliest → 13.0.1 | 13.0.1+security-01 |
| Grafana OSS 12.4 | earliest → 12.4.3 | 12.4.3+security-02 |
| Grafana OSS 12.3 | earliest → 12.3.6 | 12.3.6+security-04 |
| Grafana OSS 12.2 | earliest → < 12.2.8+security-04 | 12.2.8+security-04 |
| Grafana OSS 12.0 | 12.0.0 → 12.2.8 | No fix stated |
| Grafana OSS 11.6 | earliest → < 11.6.14+security-04 | 11.6.14+security-04 |
| Grafana OSS 8.0 | 8.0.0 → 11.6.14 | No fix stated |
Other CVEs of Grafana OSS
The 45 CVEs of Grafana OSS →
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