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CVE-2026-33980

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.3 · High · EPSS 0.4%

Published
Updated

Stack: python

Affected products and versions

  • adx-mcp-server

    Versions
    • <= 1.1.0: Affected

    No fix published

  • adx-mcp-server PyPI

    Versions
    • 0.1.0
    • 1.0.0
    • 1.0.2
    • 1.0.3
    • 1.0.5
    • 1.0.6
    • 1.0.7
    • 1.0.8
    • 1.0.9
    • 1.1.0
    Affected ranges
    • ECOSYSTEM: ≤ 1.1.0

    No fix published

Original sources

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