CVE-2026-33378

Published: May 13, 2026Modified: Jun 17, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: security@grafana.com (Secondary)

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.

Affected (13)

Products: Grafana: Grafana

Grafana

1 product

Grafana

Configuration A

13 vulnerable

Vulnerable Software	Affected Versions
Grafana Grafana	From 12.0.0 to 12.2.8
Grafana Grafana	From 12.3.0 to 12.3.6
Grafana Grafana	From 12.4.0 to 12.4.3
Grafana Grafana	From 8.0.0 to 11.6.14
Grafana Grafana	Version 11.6.14
Grafana Grafana	Version 11.6.14 security01
Grafana Grafana	Version 12.2.8
Grafana Grafana	Version 12.2.8 security01
Grafana Grafana	Version 12.3.6
Grafana Grafana	Version 12.3.6 security01
Grafana Grafana	Version 12.4.3
Grafana Grafana	Version 13.0.0
Grafana Grafana	Version 13.0.1

Related CWEs

CWE-400

Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References (1)

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

Source: security@grafana.com

Vendor Advisory

Timeline

No history available yet.