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fbf748b282
The self-hosted OIDC provider fetched the discovery document with a bare httpx.get(). httpx defaults to follow_redirects=False (unlike curl -L or the requests library), so when an IDP answers GET /.well-known/openid-configuration with a 3xx — Authentik canonicalises the .well-known path, and any IDP behind a reverse proxy doing an http→https upgrade redirects too — the bare redirect (empty body) tripped the status != 200 guard and raised 'OIDC discovery returned 302', which routes.py maps to the provider_unreachable audit event and a 503. The browser surfaced 'Auth provider self-hosted unreachable'. The user's smoking gun (curl -o writing zero bytes from inside the container) is exactly a redirect with no body — the same wall the code hit. Add follow_redirects=True to the discovery GET only. It's safe: the issuer-pin check and _require_https_or_loopback still validate the resolved document and every endpoint, so a redirect can't smuggle in a bad issuer or a cleartext endpoint. The token/revocation POSTs deliberately keep the no-follow default (they carry an auth code / refresh token and the endpoint is already the canonical absolute URL). Existing discovery tests mocked httpx.get with a canned 200 and never exercised a real 3xx. Add a regression test that runs a real loopback server returning a 302 on the .well-known path — fails without the fix (ProviderError: discovery returned 302), passes with it. |
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