CVE-2026-33375: Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS

Published Mar 26, 2026
·
Updated

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.

Affected Software

6 affected components
Grafana Labs Grafana MSSQL Data Source plugin
Grafana Grafana>=11.6.0<11.6.14
Grafana Grafana>=12.1.0<12.1.10
Grafana Grafana>=12.2.0<12.2.8
Grafana Grafana>=12.3.0<12.3.6
Grafana Grafana>=12.4.0<12.4.2

Event History

Mar 26, 2026
CVE Published
via MITRE·08:05 PM
Data Sourced
via MITRE·08:05 PM
DescriptionSeverity
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-33375?

CVE-2026-33375 is classified as a critical severity vulnerability due to its potential to cause Out-Of-Memory (OOM) conditions.

2

How do I fix CVE-2026-33375?

To remediate CVE-2026-33375, it is recommended to update to the latest version of the Grafana MSSQL Data Source plugin that includes the security fix.

3

Who is affected by CVE-2026-33375?

CVE-2026-33375 affects users of the Grafana MSSQL Data Source plugin, specifically allowing low-privileged users to exploit the vulnerability.

4

What kind of attack does CVE-2026-33375 enable?

CVE-2026-33375 enables a denial-of-service attack by causing memory exhaustion on the host container.

5

Can CVE-2026-33375 be exploited remotely?

Yes, CVE-2026-33375 can potentially be exploited remotely by low-privileged users who have access to the Grafana environment.

Contact

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