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

March 27, 2026 (updated March 30, 2026)

adx-mcp-server (<= latest, commit 48b2933) contains 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.

References

github.com/advisories/GHSA-vphc-468g-8rfp
github.com/pab1it0/adx-mcp-server
github.com/pab1it0/adx-mcp-server/commit/0abe0ee55279e111281076393e5e966335fffd30
github.com/pab1it0/adx-mcp-server/security/advisories/GHSA-vphc-468g-8rfp
nvd.nist.gov/vuln/detail/CVE-2026-33980

Code Behaviors & Features

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