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

Quick assessment

Affected
Grafana Grafana OSS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grafana MSSQL Data Source Plugin是Grafana开源的一个用于连接Microsoft SQL Server的数据源插件。 Grafana MSSQL data source plugin存在安全漏洞，该漏洞源于逻辑缺陷允许低权限用户绕过API限制，可能导致内存耗尽和容器崩溃。

CVSS 6.5 · Medium EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 5

VendorProduct Version RangeStatus
Grafana Grafana OSS 11.6.0< 11.6.14+security-01 affected
12.1.0< 12.1.10+security-01 affected
12.2.0< 12.2.8+security-01 affected
12.3.0< 12.3.6+security-01 affected
12.4.0< 12.4.2 affected
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I. Basic Information for CVE-2026-33375

Vulnerability Information
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Vulnerability Title
Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana MSSQL Data Source Plugin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana MSSQL Data Source Plugin是Grafana开源的一个用于连接Microsoft SQL Server的数据源插件。 Grafana MSSQL data source plugin存在安全漏洞，该漏洞源于逻辑缺陷允许低权限用户绕过API限制，可能导致内存耗尽和容器崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Grafana Grafana OSS 11.6.0 ~ 11.6.14+security-01 -

II. Public POCs for CVE-2026-33375

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III. Intelligence Information for CVE-2026-33375

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Same Patch Batch · Grafana · 2026-03-26 · 3 CVEs total

CVE-2026-28377 7.5 HIGH S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint (CVE-2025-41118 Pattern)
CVE-2026-21724 5.4 MEDIUM Missing Protected-field Authorization in Provisioning Contact Points API

IV. Related Vulnerabilities

Same product: Grafana OSS
Same vendor: Grafana

V. Comments for CVE-2026-33375

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