CVE-2026-33375: Vulnerability in Grafana Grafana OSS
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.
AI Analysis
Technical Summary
CVE-2026-33375 is a vulnerability in the Grafana MSSQL data source plugin where a logic flaw permits a low-privileged user (Viewer) to circumvent API restrictions. This can trigger catastrophic memory exhaustion (Out-Of-Memory), leading to a crash of the host container running Grafana OSS. The issue is classified under CWE-400 (Uncontrolled Resource Consumption).
Potential Impact
Exploitation of this vulnerability results in denial of service by crashing the host container due to memory exhaustion. There is no impact on confidentiality or integrity reported. The attack requires network access and low privileges (Viewer role) within Grafana.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently available. Until a fix is released, consider restricting Viewer role permissions or limiting access to the MSSQL data source plugin to trusted users only.
CVE-2026-33375: Vulnerability in Grafana Grafana OSS
Description
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.
CVSS v3.1
Score 6.5medium
Affected software
Grafana
Grafana OSS
pkg:github/grafana/grafanaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-33375 is a vulnerability in the Grafana MSSQL data source plugin where a logic flaw permits a low-privileged user (Viewer) to circumvent API restrictions. This can trigger catastrophic memory exhaustion (Out-Of-Memory), leading to a crash of the host container running Grafana OSS. The issue is classified under CWE-400 (Uncontrolled Resource Consumption).
Potential Impact
Exploitation of this vulnerability results in denial of service by crashing the host container due to memory exhaustion. There is no impact on confidentiality or integrity reported. The attack requires network access and low privileges (Viewer role) within Grafana.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently available. Until a fix is released, consider restricting Viewer role permissions or limiting access to the MSSQL data source plugin to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GRAFANA
- Date Reserved
- 2026-03-19T07:55:06.977Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69c5ac523c064ed76fd41c4b
Added to database: 03/26/2026, 21:59:46 UTC
Last enriched: 08/11/2026, 13:38:30 UTC
Last updated: 09/14/2026, 10:01:30 UTC
Views: 303
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