x402engine-x402engine-mcp

Security Findings (45)

• CriticalAS-006

  💻Arbitrary Code Execution

  heuristic signal

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

  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.

• LowAS-011

  ℹ️Missing Rate-Limit / Timeout ×8

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

  discover_servicesgenerate_imagetranscribe_audiosearch_cryptosearch_flightssearch_locationssearch_hotelssearch_cheapest_dates

  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 ×10

  declared capabilities: network access

  discover_servicesgenerate_imagesearch_cryptosearch_flightssearch_locationssearch_hotelssearch_cheapest_dates

  declared capabilities: code/command execution

  execute_code

  declared capabilities: network access, filesystem access

  transcribe_audio

  declared capabilities: filesystem access

  create_embeddings

  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 ×24

  Tool did not expose metadata.dependencies or repo_url, so supply-chain coverage is limited.

  discover_servicesgenerate_imageexecute_codetranscribe_audioget_crypto_priceget_crypto_marketsget_crypto_historyget_trending_cryptosearch_cryptoget_wallet_balancesget_wallet_transactionsget_wallet_pnlget_token_pricesget_token_metadatapin_to_ipfsget_from_ipfssearch_flightssearch_locationssearch_hotelssearch_cheapest_datesresolve_ensreverse_ensllm_chatcreate_embeddings

  Fix: Review and remediate the identified issue.

• InfoAS-010

  🔑Insecure Secret Handling ×2

  input parameter "tokens" accepts a credential (informational; not evidence of insecure handling)

  get_token_prices

  input parameter "max_tokens" accepts a credential (informational; not evidence of insecure handling)

  llm_chat

  Fix: 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.