An authenticated user with permission to query a SQL data source can bypass the fix for CVE-2026-33375 by injecting the timeGroup macro through a WHERE clause, which Grafana's regex-based macro parsing does not reject. Evaluating the injected macro causes uncontrolled memory consumption that can terminate the Grafana server process, resulting in a denial of service. The Microsoft SQL Server, PostgreSQL, and MySQL data sources are affected.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Thu, 03 Sep 2026 09:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 03 Sep 2026 07:30:00 +0000

Type Values Removed Values Added
Title CVE-2026-19475 CVE Record SQL Data Source Plugin: OOM DoS via $__timeGroup macro

Wed, 02 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Wed, 02 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
Description An authenticated user with permission to query a SQL data source can bypass the fix for CVE-2026-33375 by injecting the timeGroup macro through a WHERE clause, which Grafana's regex-based macro parsing does not reject. Evaluating the injected macro causes uncontrolled memory consumption that can terminate the Grafana server process, resulting in a denial of service. The Microsoft SQL Server, PostgreSQL, and MySQL data sources are affected.
Title CVE-2026-19475 CVE Record
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: 2026-09-03T08:08:02.649Z

Reserved: 2026-08-10T14:51:01.083Z

Link: CVE-2026-19475

cve-icon Vulnrichment

Updated: 2026-09-02T18:01:00.390Z

cve-icon NVD

Status : Received

Published: 2026-09-02T16:17:15.120

Modified: 2026-09-02T19:17:16.637

Link: CVE-2026-19475

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T10:15:05Z

Weaknesses