CVE-2026-19475
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.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Awaiting Analysis - security@grafana.com
- Published
- 2026-09-02
- Last modified
- 2026-09-03
- Weaknesses
- CWE-400
Affected products
- Grafana Oss (Grafana)
- Microsoft Sql Server Datasource (Grafana)
- Mysql Datasource (Grafana)
- Postgresql Datasource (Grafana)
References
- https://grafana.com/security/security-advisories/cve-2026-19475
