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Code Module SECURITY

Version: v1.1.9 | Status: Active | Last Updated: February 2026

Security Overview​

The code module handles potentially untrusted code execution and requires strict security controls.

High-Risk Components​

sandbox/​

  • Executes untrusted code in isolated Docker containers
  • Risk: Container escape, resource exhaustion
  • Mitigation: Docker isolation, resource limits, network restrictions

execution/​

  • Processes code execution requests
  • Risk: Code injection, malicious input
  • Mitigation: Input validation, sandboxing

review/​

  • Analyzes external code
  • Risk: Malicious code patterns
  • Mitigation: Static analysis, safe parsing

Security Controls​

Container Isolation​

  • All code execution in Docker containers
  • No network access by default
  • Resource limits (CPU, memory, time)
  • Read-only filesystem where possible

Input Validation​

  • Language validation before execution
  • Code size limits
  • Character encoding validation
  • File path sanitization

Resource Management​

  • Execution timeouts
  • Memory limits
  • Process limits
  • Disk quota

Best Practices​

  1. Never trust user input - Validate all code before execution
  2. Use least privilege - Containers run with minimal permissions
  3. Monitor resources - Track CPU, memory, and I/O usage
  4. Log everything - Audit trail for all executions
  5. Regular updates - Keep Docker images updated

Detailed Architecture and Implementation​

Design Principles​

  1. Strict Modularity: Each component is isolated and communicates via well-defined APIs.
  2. Performance Optimization: Implementation leverages lazy loading and intelligent caching to minimize resource overhead.
  3. Error Resilience: Robust exception handling ensures system stability even under unexpected conditions.
  4. Extensibility: The architecture is designed to accommodate future enhancements without breaking existing contracts.

Technical Implementation​

The codebase utilizes modern Python features (version 3.10+) to provide a clean, type-safe API. Interaction patterns are documented in the corresponding AGENTS.md and SPEC.md files, ensuring that both human developers and automated agents can effectively utilize these capabilities.