Migrating from Deprecated OpenID Connect to JWT Authentication: Handling aud Claim Validation

Ensuring Proper Client ID Validation in JWT-Based Authentication

Switching from OpenID Connect (OIDC) authentication to JSON Web Token (JWT)-based authentication, one significant challenge that emerges is the validation of the Client ID set in the "aud" (audience) claim of the "access_token." Unlike OIDC, which provides built-in mechanisms for validating the Client ID within the API, JWT authentication may require additional configurations to ensure proper validation.

Since direct audience ("aud") validation is not natively supported, organizations can adopt the following approach to mitigate this challenge:

Client ID Mapping

One effective method is to use the Client ID as a scope and manually map it to a policy.

Example: Mapping a Client ID to a Policy