Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS
Priority LOW 29CWE-400Published · Updated
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
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
The Grafana MSSQL data source plugin contains a logic flaw that allows a low-privileged user (Viewer) to bypass API restrictions and trigger a catastrophic Out-Of-Memory (OOM) memory exhaustion, crashing the host container.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00451 39th percentileScored 2026-11-07
Fix Fixed Grafana OSS (Grafana): 11.6.14+security-01, 12.1.10+security-01, 12.2.8+security-01 +2
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 | Grafana OSS | 11.6.0 to before 11.6.14+security-01; 12.1.0 to before 12.1.10+security-01; 12.2.0 to before 12.2.8+security-01; 12.3.0 to before 12.3.6+security-01; 12.4.0 to before 12.4.2 | 11.6.14+security-01, 12.1.10+security-01, 12.2.8+security-01, 12.3.6+security-01, 12.4.2 | Patch available | CNA |
- Grafana OSS VendorGrafana Affected 11.6.0 to before 11.6.14+security-01; 12.1.0 to before 12.1.10+security-01; 12.2.0 to before 12.2.8+security-01; 12.3.0 to before 12.3.6+security-01; 12.4.0 to before 12.4.2 Fixed in 11.6.14+security-01, 12.1.10+security-01, 12.2.8+security-01, 12.3.6+security-01, 12.4.2 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* | 11.6.0 to before 11.6.14; 12.1.0 to before 12.1.10; 12.2.0 to before 12.2.8; 12.3.0 to before 12.3.6; 12.4.0 to before 12.4.2 | Vulnerable | Grafana |
- cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* Versions 11.6.0 to before 11.6.14; 12.1.0 to before 12.1.10; 12.2.0 to before 12.2.8; 12.3.0 to before 12.3.6; 12.4.0 to before 12.4.2 Vulnerable ·Grafana
Remediation
- Fix · CNA Grafana OSS (Grafana) Fixed in 11.6.14+security-01, 12.1.10+security-01, 12.2.8+security-01, 12.3.6+security-01, 12.4.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-33375
- 2026-10-03 Alias added: GHSA-9vq6-r4xh-vm55
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-2026-33375 · CVE Program
- CVE-2026-33375 · NVD
- FIRST EPSS
- GHSA-9vq6-r4xh-vm55 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-33375 · 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