🔒 Security & Privacy

5 OAuth2 Vulnerabilities Exposed in Minutes by New MCP Security Tool

Spec-compliant OAuth2 server. Clean ZAP scan. Then: five bugs in ten minutes flat, courtesy of an MCP security workbench. Security just got a wake-up call.

theAIcatchup Apr 09, 2026 4 min read
Screenshot of MCP toolbox replaying OAuth2 introspect request exposing token claims

⚡ Key Takeaways

  • Spec compliance and ZAP scans miss deep OAuth2 flow vulnerabilities—AI-MCP tools expose them fast. 𝕏
  • go-appsec/toolbox + Claude Code found 5 bugs in 10 minutes, no pentest experience needed. 𝕏
  • Rise of protocol-aware AI testing could slash appsec costs, disrupt $2B market. 𝕏
Published by

theAIcatchup

Community-driven. Code-first.

#AI pentesting #Claude AI pentest #Claude Code #MCP security tool #MCP tools #OAuth2 security #OAuth2 vulnerabilities #appsec testing #go-appsec toolbox #identity provider bugs

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Originally reported by Dev.to

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