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CVE-2026-33980— Azure Data Explorer MCP Server: KQL Injection in multiple tools allows MCP client to execute arbitrary Kusto queries

Quick assessment

Affected
pab1it0 adx-mcp-server
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Azure Data Explorer MCP Server是Pavel Shklovsky个人开发者的一个连接AI助手与数据仓库的查询协议服务器。 Azure Data Explorer MCP Server 0.1.1及之前版本存在安全漏洞，该漏洞源于table_name参数未经任何验证或清理直接插入KQL查询，可能导致KQL注入攻击。

CVSS 8.3 · High EPSS 0.40% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-33980

Vulnerability Information
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Vulnerability Title
Azure Data Explorer MCP Server: KQL Injection in multiple tools allows MCP client to execute arbitrary Kusto queries
Source: CVE Program / CVE List V5
Vulnerability Description
Azure Data Explorer MCP Server is a Model Context Protocol (MCP) server that enables AI assistants to execute KQL queries and explore Azure Data Explorer (ADX/Kusto) databases through standardized interfaces. Versions up to and including 0.1.1 contain KQL (Kusto Query Language) injection vulnerabilities in three MCP tool handlers: `get_table_schema`, `sample_table_data`, and `get_table_details`. The `table_name` parameter is interpolated directly into KQL queries via f-strings without any validation or sanitization, allowing an attacker (or a prompt-injected AI agent) to execute arbitrary KQL queries against the Azure Data Explorer cluster. Commit 0abe0ee55279e111281076393e5e966335fffd30 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
数据查询逻辑中特殊元素的不当中和
Source: CVE Program / CVE List V5
Vulnerability Title
Azure Data Explorer MCP Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Azure Data Explorer MCP Server是Pavel Shklovsky个人开发者的一个连接AI助手与数据仓库的查询协议服务器。 Azure Data Explorer MCP Server 0.1.1及之前版本存在安全漏洞，该漏洞源于table_name参数未经任何验证或清理直接插入KQL查询，可能导致KQL注入攻击。
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
pab1it0 adx-mcp-server <= 1.1.0 -

II. Public POCs for CVE-2026-33980

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9975 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-33980

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Patches & Fixes for CVE-2026-33980 (1)

Vendor Advisories for CVE-2026-33980 (1)

IV. Related Vulnerabilities

Same weakness: CWE-943