CVE-2026-33378

medium

Published 2026-05-13 · Modified 2026-05-14

CVSS v3

6.5

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

CVSS v2

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VIR risk

6.5

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.

Predictions

Exploit likelihood

75%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-33378.html

OS impact

OS	Version	Status	Fixed in
sles		affected

References

https://grafana.com/security/security-advisories/cve-2026-33378
https://www.suse.com/security/cve/CVE-2026-33378.html

CWEs

CWE-400

Verify integrity in audit chain (admin only). AS-IS.