Spring Boot 4.1's SSRF Mitigation Is Opt-In: How to Actually Close the Hole
Open the webhook sender in almost any payments service and you will find a method that reads a URL...
🎯 Vulnerability: Server-Side Request Forgery (SSRF)
💡 Defense Fix: Enforce URL whitelisting, block private IP ranges (10.0.0.0/8, 169.254.169.254), and mandate AWS IMDSv2 headers.