CVE-2026-33378

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

May 13, 2026

Last Modified

May 14, 2026

CWE ID

CWE-400

Source

NVD

Vendor

Grafana

Product

Grafana OSS

External References

https://grafana.com/security/security-advisories/cve-2026-33378

CVSS Score & Metrics

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