CVE-2026-33378
Grafana Data Source Plugin: DoS (OOM) via Negative Interval Injection in $__timeGroup Macro
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | grafana |
| Product | grafana oss |
| Ecosystems | |
| Industries | Technology |
| Published | May 13, 2026 |
| Last Updated | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Grafana / Grafana OSS
8.0.0 ≤ 11.6.14 11.6.14 < 11.6.14+security-04 12.0.0 ≤ 12.2.8 12.2.8 < 12.2.8+security-04 12.3.0 ≤ 12.3.6 12.3.6 < 12.3.6+security-04 12.4.0 ≤ 12.4.3 12.4.3 < 12.4.3+security-02 13.0.0 ≤ 13.0.1 13.0.1 < 13.0.1+security-01