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Show HN: MCP-Shield – Detect security issues in MCP servers
Security scanner for MCP servers. Contribute to riseandignite/mcp-shield development by creating an account on GitHub.
MCP-Shield scans your installed MCP (Model Context Protocol) servers and detects vulnerabilities like tool poisoning attacks, exfiltration channels and cross-origin escalations. 🛡️ Vulnerability Detection: Hidden instructions in tool descriptions Potential data exfiltration channels Tool shadowing and behavior modification Sensitive file access attempts Cross-origin violations between servers It allows a malicious MCP server to manipulate how an LLM uses other, legitimate tools It can happen entirely at the prompt level, not requiring code execution It persists within the context window of the LLM, making it difficult to detect
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