CVE-2026-33378 — MEDIUM (6.5)

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.

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-400

References

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

FAQ

What is CVE-2026-33378?

CVE-2026-33378 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 a...

How severe is CVE-2026-33378?

CVE-2026-33378 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33378?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.