dev.to· Oct 14, 2026· by authbyexample1

A profile update endpoint can let users change fields they were never allowed to edit

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Most apps have a PATCH /users/:id or PUT /projects/:id handler that checks one thing: can this caller...
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#authorization#security#backend#api