CVE-2026-33375— Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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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 vendor: Grafana
- CVE-2026-21728
Tempo query limit results in unbounded memory allocation - CVE-2026-21726
Loki Path Traversal - CVE-2021-36156 Bypass - CVE-2025-41118
Sensitive COS `SecretKey` exposed in plaintext via configura - CVE-2026-21727
Grafana Correlations: Cross-Tenant Data Disclosure and Perma - CVE-2025-12141
Grafana Alerting Editors can edit destination of webhooks th
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