CVE-2026-33378
Grafana Data Source Plugin: DoS (OOM) via Negative Interval Injection in $__timeGroup Macro
6.5
MEDIUM
CVSS 3.1
EPSS 0.02%
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.
How to fix CVE-2026-33378
To remediate CVE-2026-33378, upgrade the affected package to a fixed version below.
- —upgrade to 11.6.14 or later
Is CVE-2026-33378 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 8.0.0, < 11.6.14, >= 12.0.0, < 12.2.8, >= 12.3.0, < 12.3.6, >= 12.4.0, < 12.4.3, >= 13.0.0, < 13.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |