CVE-2026-33378 PUBLISHED

Grafana Data Source Plugin: DoS (OOM) via Negative Interval Injection in $__timeGroup Macro

Assigner: GRAFANA
Reserved: 19.03.2026 Published: 13.05.2026 Updated: 13.05.2026

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 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Product Status

Vendor Grafana
Product Grafana OSS
Versions Default: unaffected
  • affected from 8.0.0 to 11.6.14 (incl.)
  • affected from 11.6.14 to 11.6.14+security-04 (excl.)
  • affected from 12.0.0 to 12.2.8 (incl.)
  • affected from 12.2.8 to 12.2.8+security-04 (excl.)
  • affected from 12.3.0 to 12.3.6 (incl.)
  • affected from 12.3.6 to 12.3.6+security-04 (excl.)
  • affected from 12.4.0 to 12.4.3 (incl.)
  • affected from 12.4.3 to 12.4.3+security-02 (excl.)
  • affected from 13.0.0 to 13.0.1 (incl.)
  • affected from 13.0.1 to 13.0.1+security-01 (excl.)

References