Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS

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Summary

CVECVE-2026-33375
StatePUBLISHED
AssignerGRAFANA
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-26 21:17:05 UTC
Updated2026-03-31 19:01:30 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-400 | CWE-400 CWE-400 Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Grafana Grafana All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Grafana Grafana OSS affected 11.6.0 11.6.14+security-01 semver OnPrem
CNA Grafana Grafana OSS affected 12.1.0 12.1.10+security-01 semver OnPrem
CNA Grafana Grafana OSS affected 12.2.0 12.2.8+security-01 semver OnPrem
CNA Grafana Grafana OSS affected 12.3.0 12.3.6+security-01 semver OnPrem
CNA Grafana Grafana OSS affected 12.4.0 12.4.2 semver OnPrem

References

ReferenceSourceLinkTags
grafana.com/security/security-advisories/cve-2026-33375 [email protected] grafana.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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