js-reverse-mcp

Security Findings (60)

• CriticalAS-006

  💻Arbitrary Code Execution ×2

  heuristic signal

  tool name or description implies arbitrary script/code execution (evaluate_script, execute javascript, etc.)

  evaluate_scriptselect_frame

  Fix: This tool can execute arbitrary code or shell commands on the host system. Remove it unless strictly required. If kept: (1) restrict access to trusted users/agents only, (2) require human approval before each invocation (Claude Desktop: set approval_required: true; other clients: enable equivalent confirmation), (3) use the most restrictive sandbox or read-only mode available, and (4) never expose this tool to untrusted input sources.

• HighAS-003

  🔀Scope Mismatch ×2

  tool name "get_paused_info" implies read-only operation but declares exec permission

  get_paused_info

  tool name "get_script_source" implies read-only operation but declares exec permission

  get_script_source

  Fix: Ensure tool names, descriptions, and permission declarations are internally consistent. Use explicit naming conventions that fully reflect actual capabilities.

• LowAS-011

  ℹ️Missing Rate-Limit / Timeout ×16

  tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration

  break_on_xhrevaluate_scriptget_paused_infoget_request_initiatorget_script_sourceget_websocket_messageslist_breakpointslist_network_requestslist_scriptspause_or_resumeremove_breakpointsave_script_sourcesearch_in_sourcesselect_frameset_breakpoint_on_textstep

  Fix: 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.

• InfoAS-002

  ⚠️Excessive Permissions ×19

  declared capabilities: network access

  break_on_xhrlist_network_requestslist_scriptsnavigate_pagenew_pagesearch_in_sources

  declared capabilities: code/command execution, filesystem access

  evaluate_scriptstep

  declared capabilities: code/command execution

  get_paused_infopause_or_resumeselect_frame

  declared capabilities: network access, HTTP requests

  get_request_initiator

  declared capabilities: code/command execution, network access, filesystem access

  get_script_sourceremove_breakpointsave_script_source

  declared capabilities: network access, filesystem access

  get_websocket_messagesset_breakpoint_on_text

  declared capabilities: HTTP requests

  list_breakpoints

  declared capabilities: filesystem access

  take_screenshot

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

• InfoAS-014

  ℹ️Dependency Inventory Unavailable ×21

  No metadata.dependencies or repo_url were exposed by this MCP server, and no local project manifest could be inferred from the launch command.

  break_on_xhrevaluate_scriptget_paused_infoget_request_initiatorget_script_sourceget_websocket_messageslist_breakpointslist_console_messageslist_network_requestslist_scriptsnavigate_pagenew_pagepause_or_resumeremove_breakpointsave_script_sourcesearch_in_sourcesselect_frameselect_pageset_breakpoint_on_textsteptake_screenshot

  Fix: Review and remediate the identified issue.