CVE-2026-19475 — SQL Data Source Plugin: OOM DoS via $__timeGroup macro
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 r…
Published: 2026-09-02 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7