CVE-2026-33378
Published:May 13, 2026
Updated:May 25, 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.
Affected Packages
https://github.com/grafana/grafana.git (GITHUB):
Affected version(s) >=v12.4.0 <v12.4.3+security-02Fix Suggestion:
Update to version v12.4.3+security-02https://github.com/grafana/grafana.git (GITHUB):
Affected version(s) =v13.0.0 <v13.0.1+security-01Fix Suggestion:
Update to version v13.0.1+security-01https://github.com/grafana/grafana.git (GITHUB):
Affected version(s) >=v0.0.0-cloud <v11.6.14+security-04Fix Suggestion:
Update to version v11.6.14+security-04https://github.com/grafana/grafana.git (GITHUB):
Affected version(s) >=v12.3.0 <v12.3.6+security-04Fix Suggestion:
Update to version v12.3.6+security-04https://github.com/grafana/grafana.git (GITHUB):
Affected version(s) >=v12.0.0 <v12.2.8+security-04Fix Suggestion:
Update to version v12.2.8+security-04github.com/grafana/grafana (GO):
Affected version(s) >=v0.0.0-20251020084502-5c5ecac6eea6 <v0.0.0-20260512043321-4299b9d2685aFix Suggestion:
Update to version v0.0.0-20260512043321-4299b9d2685aRelated Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
EPSS
Base Score:
0.01