Add MCP (Model Context Protocol) security rule#97
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santosomar merged 6 commits intomainfrom Jan 27, 2026
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Add new security rule based on CoSAI MCP Security guidelines (OASIS Open Project, January 2026). The rule covers: - Workload identity and authentication (SPIFFE/SPIRE) - Input and data sanitization for prompt injection prevention - Sandboxing and isolation requirements - Cryptographic verification of resources - Transport layer security (stdio and HTTP) - Human-in-the-loop controls - Logging and observability - Deployment pattern security guidance
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Pull request overview
This PR adds a new security rule for MCP (Model Context Protocol) implementations based on the CoSAI MCP Security guidelines (January 2026). The rule provides comprehensive security guidance for developers implementing MCP servers and clients, addressing critical security concerns identified in recent CVEs and incidents across MCP/agentic deployments.
Changes:
- Added
codeguard-0-mcp-security.mdrule covering authentication, input sanitization, sandboxing, cryptographic verification, transport security, human-in-the-loop controls, logging, and deployment patterns - Rule targets Python, JavaScript, TypeScript, Go, and Rust implementations
- Configured as context-specific rule (
alwaysApply: false)
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aacarter1
approved these changes
Jan 27, 2026
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Add new security rule based on CoSAI MCP Security guidelines. The rule covers:
@ramraaj25 , @thomas-bartlett , @aacarter1 - please review from an MCP server developer perspective.