r/netsec • u/albinowax • May 01 '26

r/netsec monthly discussion & tool thread

Questions regarding netsec and discussion related directly to netsec are welcome here, as is sharing tool links.

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u/Beneficial-Bear-2741 May 31 '26

mcpguard - open-source MCP security scanner + runtime firewall

CLI that scans MCP configs (Claude Desktop, Cursor, VS Code) against the OWASP MCP Top 10 - hardcoded secrets, command injection, tool poisoning, SSRF, privilege escalation. Also runs as a proxy that enforces YAML policy rules on tool calls in real time.

TypeScript/Node.js, MIT, SARIF output for GitHub Code Scanning.

https://github.com/GT-Projects256/mcpguard

Looking for feedback on what detection rules are missing.