python auth_error ai_generated true

HTTPException 401: {"detail":"Not authenticated"}

ID: python/fastapi-oauth2-token-401

Also available as: JSON · Markdown · 中文
80%Fix Rate
86%Confidence
0Evidence
2024-06-19First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
0.100+ active — — —
0.110+ active — — —

Root Cause

OAuth2PasswordBearer(tokenUrl=...) receives no Authorization header, or tokenUrl path doesn't match the actual login route.

generic

中文

OAuth2PasswordBearer(tokenUrl=...) 未收到 Authorization 头，或 tokenUrl 路径与实际登录路由不匹配。

Workarounds

  1. 92% success 
    oauth2_scheme = OAuth2PasswordBearer(tokenUrl='/auth/token')  # must match @app.post('/auth/token')
  2. 93% success 
    Client: headers={'Authorization': f'Bearer {token}'}

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Token becomes None; downstream still fails auth.

  2. 95% fail

    Security regression; endpoints become public.