SQL Data Source Plugin: OOM DoS via $__timeGroup macro
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-400.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Grafana | PostgreSQL Datasource | 13.0.0 – 13.0.1 | — | No fix listed | CNA |
| Grafana | MySQL Datasource | 13.0.0 – 13.0.2 | — | No fix listed | CNA |
| Grafana | Grafana OSS | 11.6.0 – 11.6.16; 12.0.0 – 12.0.10; 12.1.0 – 12.1.10; 12.2.0 – 12.2.10; 12.3.0 – 12.3.11; 12.4.0 – 12.4.9; 13.0.0 – 13.0.7; 13.1.0 – 13.1.4 | — | No fix listed | CNA |
| Grafana | Microsoft SQL Server Datasource | 13.0.0 – 13.0.1 | — | No fix listed | CNA |
- PostgreSQL Datasource VendorGrafana Affected 13.0.0 – 13.0.1 Fixed in — No fix listed CNA
- MySQL Datasource VendorGrafana Affected 13.0.0 – 13.0.2 Fixed in — No fix listed CNA
- Grafana OSS VendorGrafana Affected 11.6.0 – 11.6.16; 12.0.0 – 12.0.10; 12.1.0 – 12.1.10; 12.2.0 – 12.2.10; 12.3.0 – 12.3.11; 12.4.0 – 12.4.9; 13.0.0 – 13.0.7; 13.1.0 – 13.1.4 Fixed in — No fix listed CNA
- Microsoft SQL Server Datasource VendorGrafana Affected 13.0.0 – 13.0.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Multicluster Global Hub | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 5 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 6 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 7 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 8 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-19475
- 2026-10-03 Alias added: GHSA-f7qf-p234-rj62
References
More Grafana vulnerabilities
- TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
- TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
- TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
- TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
- TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
Sources
- CVE-2026-19475 · CVE Program
- CVE-2026-19475 · NVD
- FIRST EPSS
- GHSA-f7qf-p234-rj62 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-19475 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences