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Graph/fd2f758a-b1bb-44d2-950a-9b7c92d9920b

Problemunvalidated

FastAPI returns 401 with JWK public Attribute for authorization token not found

fd2f758a-b1bb-44d2-950a-9b7c92d9920b

FastAPI returns 401 with JWK public Attribute for authorization token not found

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Updated4/30/2026

PageRank0.0000

Effectiveness0.000

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DESCRIBESQuestion

CAUSED_BYRootCause

Incorrect Cognito region or client configuration prevents the library from finding the matching JWK for the access token

MANIFESTS_ASSymptom

HTTP 401 Unauthorized

PERTAIN_TODomain

PERTAIN_TOProblem

Tension: I can only authorize thru FastAPI Docs top right green Authorize button. Outcome: However, if I login thru FastAPI/Swagger Docs Authorize then everything works.

FIXED_BYSolution

I think you can use a middleware that adds a header to the response — FastAPI oauth2 + jwt extend exp time at every request. Tension: This is not very secure if there is a risk of token theft, but it can reach the goal. Outcome: response.headers["bearer-refreshed"] = access_token.

FIXED_BYSolution

Double check the Cognito client's data against the data in AWS

FIXED_BYSolution

Add headers: { Authorization: `Bearer ${token}` } to the mutation query

FIXED_BYSolution

Use Laravel Sanctum personal access tokens and CSRF tokens to authenticate API requests

FIXED_BYSolution

Use MSAL to acquire the access token in the context of the signed-in user as a public client, requesting scopes for the specified `api://<appid>` (target app registration/resource). The resulting Bearer token is then used to call the protected API.

FIXED_BYSolution

jwtAuthFilter was triggered. — i sent a request by Post man on "localhost:8085/api/auth/login". Outcome: OncePerRequestFilter has shouldNotFilter method to avoid filtering for some requests.

FIXED_BYSolution

I guess I'm looking for a kind a JWT associated to the ID without expiration but maybe there is better solution. — Generate unpredictable/unforgeable URL from predictable ID. Outcome: I think your idea of using a JWT makes the most sense.

FIXED_BYSolution

Update the API folder’s .htaccess to allow the Authorization header (add Authorization to Access-Control-Allow-Headers, optionally keep the other CORS headers/methods).

FIXED_BYSolution

Configure the view to use the proper DRF authentication backend for the token (e.g., set authentication_classes = [JWTAuthentication] and ensure permission_classes align), and/or set the JWTAuthentication class in the project’s REST_FRAMEWORK settings.

API Endpoint Mismatch

Ephemeral Auth State Misuse

Swagger UI Null Semantics

Secret-Based Auth Miswiring

Azure Routing/Response Mismatch

Auth Header Token Misuse

Request Routing Auth/CSRF Mismatch

Secrets Miswired Auth

FastAPI Dependency Currying

Sentry CLI Invalid Token

Token Audience Misuse

Swagger Interception Gap

Security Matcher Not Applied

Filter Unauthorized Publisher

Signed URL Header Binding

OAuth Flow Attribution Gap

Cookie Scope Misalignment

Misrouted Auth Leads 404/401

Stale JWT Session Claims

FastAPI Dependency 422 Failures

JWT Auth Flow Mismatch

Cookie Transport Misalignment

Cross-Subdomain Cookie Misconfig

SameSite Cookie Auth Breaks

Azure App Config Mismatch

Environment Token Mismatch

Auth Token Persistence Breaks

Cross-Subdomain Cookie Visibility

Identity and Routing Mismatch

Token Permissions Mismatch

JWT Token Type Confusion

Cookie Scope Mismatch

Token Type Confusion

Token Type Ambiguity

Misbound JWT Identity Boundaries

Token Type Mismatch

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