Decision API is not respecting the token_from config

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Ory Network Project

No response

Describe the bug

I am trying to send a custom token header to the Oathkeeper API for token auth. But it seems to not pass a custom token header to the check_session_url. Instead, it does not send a token at all.

Oathkeeper does check the token. If I don't include the token, Oathkeeper immediately returns a 401. But it never gets passed onto the check_session_url.

Reproducing the bug

Here is my command:

curl -H "X-Forwarded-Method: GET" -H "X-Forwarded-Proto: http" -H "X-Forwarded-Host: myhost" -H "X-Forwarded-Uri: /xyz" -H "xyz: sometoken" -X GET http://oathkeeper-api:4456/decisions -v

From my logs, my request makes it to Kratos, but without the token, so it produces a 401.

My expectation is for Oathkeeper to read the header xxx and send Authorization: Bearer sometoken to Kratos.

If I remove the token_from section from the config and use the default values, this works.

curl -H "X-Forwarded-Method: GET" -H "X-Forwarded-Proto: http" -H "X-Forwarded-Host: myhost" -H "X-Forwarded-Uri: /xyz" -H "Authorization: Bearer sometoken" -X GET http://oathkeeper-api:4456/decisions -v

Relevant log output

No response

Relevant configuration

config:
    access_rules:
      repositories:
        - file:///etc/rules/access-rules.json
    authenticators:
      bearer_token:
        enabled: true
        config:
          check_session_url: http://kratos-public/sessions/whoami
          preserve_path: true
          token_from:
            header: xxx
          extra_from: "@this"
          subject_from: "identity.traits.my_id"
    authorizers:
      allow:
        enabled: true
    mutators:
      header:
        enabled: true
        config:
          headers:
            X-User: "{{ print .Subject }}"

Version

0.40.6

On which operating system are you observing this issue?

Linux

In which environment are you deploying?

Kubernetes with Helm

Additional Context

No response

ory / oathkeeper