How I Found SSRF and CORS Misconfigurations in a Modern Web App

📰 Medium · Cybersecurity

Learn how to identify SSRF and CORS misconfigurations in modern web apps through manual penetration testing

intermediate Published 14 May 2026
Action Steps
  1. Run a manual penetration test on a web app to identify potential vulnerabilities
  2. Configure a proxy to intercept and analyze HTTP requests
  3. Test for SSRF by attempting to access internal resources
  4. Apply CORS headers to restrict cross-origin requests
  5. Compare the responses to identify potential misconfigurations
Who Needs to Know This

Security engineers and penetration testers can benefit from this knowledge to improve web app security, while developers can learn how to avoid common misconfigurations

Key Insight

💡 SSRF and CORS misconfigurations can be exploited to access internal resources and sensitive data

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🚨 Identify SSRF & CORS misconfigurations in modern web apps through manual penetration testing 🚨
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