MCP_Server

The server attempts to mitigate SQL injection by whitelisting only 'SELECT' queries, explicitly banning DML/DDL statements, and validating referenced tables against an 'mcp.allowed.tables' configuration. However, a critical oversight is the lack of column-level access control; the 'allowedColumns' map is initialized but never used. This means that if the AI generates a query selecting sensitive columns from an allowed table, those columns would be exposed. The regex used for extracting table names is relatively simple and might not catch all complex SQL constructs, potentially allowing clever bypasses if the AI generates such a query. No direct 'eval' or similar patterns for arbitrary code execution were found, but the potential for unauthorized data exposure via SQL generation is a significant concern.