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 CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00015.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Grafana Grafana OSS unaffected
Version Status Constraints
8.0.0 affected ≤ 11.6.14
11.6.14 affected < 11.6.14+security-04
12.0.0 affected ≤ 12.2.8
12.2.8 affected < 12.2.8+security-04
12.3.0 affected ≤ 12.3.6
12.3.6 affected < 12.3.6+security-04
12.4.0 affected ≤ 12.4.3
12.4.3 affected < 12.4.3+security-02
13.0.0 affected ≤ 13.0.1
13.0.1 affected < 13.0.1+security-01

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://grafana.com/security/security-advisories/cve-2026-33378 cve-icon cve-icon
History

Thu, 14 May 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Grafana
Grafana grafana
Vendors & Products Grafana
Grafana grafana

Thu, 14 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 13 May 2026 22:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Wed, 13 May 2026 20:00:00 +0000

Type Values Removed Values Added
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.
Title Grafana Data Source Plugin: DoS (OOM) via Negative Interval Injection in $__timeGroup Macro
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GRAFANA

Published:

Updated: 2026-05-14T12:33:58.842Z

Reserved: 2026-03-19T07:55:06.977Z

Link: CVE-2026-33378

cve-icon Vulnrichment

Updated: 2026-05-14T12:33:55.700Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-13T20:16:20.583

Modified: 2026-05-14T16:21:02.930

Link: CVE-2026-33378

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-14T14:00:19Z

Weaknesses