mcp-3d-printer-server

Security Findings (29)

• HighExcessive Permission Surface ×4

  • get_printer_status:tool declares network permission
  • process_and_print_stl:tool declares network permission
  • print_3mf:tool declares network permission
  • blender_mcp_edit_model:tool declares exec permission

  Rule: AS-002Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.
• HighInsecure Secret Handling ×4

  • get_printer_status:input parameter "api_key" appears to accept a secret or credential
  • get_printer_status:input parameter "bambu_token" appears to accept a secret or credential
  • process_and_print_stl:input parameter "api_key" appears to accept a secret or credential
  • print_3mf:input parameter "bambu_token" appears to accept a secret or credential

  Rule: AS-010Fix: Avoid accepting raw credentials as input parameters. Use secret managers (e.g. 1Password CLI, AWS Secrets Manager) and ensure credentials are never logged or stored in agent traces.
• MediumExcessive Permission Surface ×15

  • extend_stl_base:tool declares fs permission
  • slice_stl:tool declares fs permission
  • confirm_temperatures:tool declares fs permission
  • process_and_print_stl:tool declares fs permission
  • get_stl_info:tool declares fs permission
  • scale_stl:tool declares fs permission
  • rotate_stl:tool declares fs permission
  • translate_stl:tool declares fs permission
  • modify_stl_section:tool declares fs permission
  • generate_stl_visualization:tool declares fs permission
  • print_3mf:tool declares fs permission
  • merge_vertices:tool declares fs permission
  • center_model:tool declares fs permission
  • lay_flat:tool declares fs permission
  • blender_mcp_edit_model:tool declares fs permission

  Rule: AS-002Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.
• LowDoS Resilience — Missing Rate Limit / Timeout ×4

  • get_printer_status:tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration
  • process_and_print_stl:tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration
  • print_3mf:tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration
  • blender_mcp_edit_model:tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration

  Rule: AS-011Fix: Declare explicit rate-limit, timeout, and retry configuration for all network and execution tools. Implement exponential back-off and surface resource state to the calling agent.
• LowExcessive Permission Surface ×2

  • modify_stl_section:input schema exposes 12 properties (threshold: 10)
  • print_3mf:input schema exposes 12 properties (threshold: 10)

  Rule: AS-002Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.