How to Implement RBAC + ABAC Authorization in Node.js APIs (2026 Guide)

Building a production API without proper authorization is like locking your front door but leaving the windows open. Authentication answers who are you? — authorization answers what can you do? Most Node.js tutorials stop at JWT verification. That's authentication. Real security requires a layered authorization model, and in 2026 the industry consensus is clear: combine RBAC (Role-Based Access Control) with ABAC (Attribute-Based Access Control) to cover both coarse-grained and fine-grained acce