What is CVE-2026-33375?

CVE-2026-33375 is a medium-severity vulnerability in Grafana, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-03-26.

How severe is CVE-2026-33375?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Grafana

CVE-2026-33375

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.004 (35.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Grafana
Grafana Oss — versions 11.6.0, 12.1.0, 12.2.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security@grafana.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33375?: CVE-2026-33375 is a medium-severity vulnerability in Grafana, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-03-26.
How severe is CVE-2026-33375?: Medium severity. CVSS v3 base score is 6.5 out of 10.