Version updated for https://github.com/ubermorgenland/mcp-testbench to version v1.0.0. This action is used across all versions by ? repositories. Go to the GitHub Marketplace to find the latest changes. Release notes 🚀 First Stable Release - Now on GitHub Marketplace! MCP Testbench is a comprehensive security testing tool for Model Context Protocol servers. Find vulnerabilities before attackers do. ✨ Features Universal Testing: Works with both stdio and HTTP MCP servers Automated Fuzzing: 14 protocol conformance tests CVE Scanning: Detects known vulnerabilities (CVE-2025-6514, CVE-2025-49596) Security Scoring: Simple A-F grades with badge generation GitHub Actions: Full CI/CD integration with PR comments Real Results: Validated against 5+ MCP servers 🔍 What It Found We tested popular MCP servers from the ecosystem: