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CVE-2026-33378

Grafana Data Source Plugin: DoS (OOM) via Negative Interval Injection in $__timeGroup Macro

Published: May 13, 2026Updated: Jun 17, 2026 Sources: CVE List NVD BDUCWE-400
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 75.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400

Affected Products

grafanagrafana
On-premWeb App
Enterprise Software / itsm-monitoring
GrafanaGrafana Labs
On-premWeb App
Enterprise Software / itsm-monitoring
Grafana OSSGrafana
On-premWeb App
Enterprise Software / itsm-monitoring
grafanaoss-projectUSEnterprise Software
grafana labscommercialUSEnterprise Softwareaka grafana labs

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

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

Timeline

Published
May 13, 2026
Last Updated
Jun 17, 2026

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