CVE-2026-33378
MEDIUMCVSS 6.5/10EPSS 0.33%
Last modified
CVE-2026-33378 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Grafana | >= 8.0.0, < 11.6.14 |
| Grafana | Grafana | >= 12.0.0, < 12.2.8 |
| Grafana | Grafana | >= 12.3.0, < 12.3.6 |
| Grafana | Grafana | >= 12.4.0, < 12.4.3 |
| Grafana | Grafana | 11.6.14 |
| Grafana | Grafana | 12.2.8 |
| Grafana | Grafana | 12.3.6 |
| Grafana | Grafana | 12.4.3 |
| Grafana | Grafana | 13.0.0 |
| Grafana | Grafana | 13.0.1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-33378?
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.
How severe is CVE-2026-33378?
CVE-2026-33378 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.
How do I fix CVE-2026-33378?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-33378?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST