Logic Flaw in Grafana MSSQL Data Source Plugin Allows Memory Exhaustion Attacks
CVE-2026-33375

6.5MEDIUM

Key Information:

Vendor

Grafana
Status
Grafana Oss
Vendor
CVE Published:
26 March 2026

What is CVE-2026-33375?

A logic flaw in the Grafana MSSQL data source plugin permits low-privileged users, such as Viewers, to bypass API restrictions. This flaw can lead to memory exhaustion, potentially crashing the hosting container and resulting in service disruptions.

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Affected Version(s)

Grafana OSS OnPrem 11.6.0 < 11.6.14+security-01

Grafana OSS OnPrem 12.1.0 < 12.1.10+security-01

Grafana OSS OnPrem 12.2.0 < 12.2.8+security-01

References

https://grafana.com/security/security-advisories/cve-2026...
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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