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Integrate with Komga

Support level: Community

What is Komga?​

Komga is an open-source comic and manga server that lets users organize, read, and stream their digital comic collections with ease.

-- https://komga.org/

Preparation​

The following placeholders are used in this guide:

  • komga.company is the FQDN of the Komga installation.
  • authentik.company is the FQDN of the authentik installation.
info

This documentation lists only the settings that you need to change from their default values. Be aware that any changes other than those explicitly mentioned in this guide could cause issues accessing your application.

authentik configuration​

Redirect URI changes in authentik 2026.5

In authentik versions earlier than 2026.5, all Redirect URIs are automatically treated as Authorization type. If you are using one of these older authentik versions, add only the Authorization URL to your Redirect URIs and do not configure a Post Logout URI.

To support the integration of Komga with authentik, you need to create an application/provider pair in authentik.

Create an email verification scope mapping​

Komga requires the email scope to return a value of email_verified: True. As of authentik 2025.10 the default behavior is to return email_verified: False, so a custom scope mapping is required for Komga to allow authentication.

Refer to Email scope verification for instructions on how to create the required custom scope mapping.

Create an application and provider​

  1. Log in to authentik as an administrator and open the authentik Admin interface.

  2. Navigate to Applications > Applications and click New Application to open the application wizard.

    • Application: provide a descriptive name, an optional group for the type of application, the policy engine mode, and optional UI settings. Note the application Slug because it will be required later.
    • Choose a Provider type: select OAuth2/OpenID Connect as the provider type.
    • Configure the Provider: provide a name (or accept the auto-provided name), the authorization flow to use for this provider, and the following required configurations.
      • Note the Client ID and Client Secret values because they will be required later.
      • Add a Redirect URI of type Strict Authorization as https://komga.company/login/oauth2/code/authentik.
      • Select any available signing key.
      • Advanced protocol settings > Scopes:
        • Add the custom email scope mapping to the Selected Scopes.
        • Remove the authentik default OAuth Mapping: OpenID 'email' scope.
    • Configure Bindings (optional): you can create a binding (policy, group, or user) to manage the listing and access to applications on a user's Application Dashboard page.

  3. Click Submit to save the new application and provider.

Komga configuration​

To configure Komga, update its application.yml file to include the following options. Existing Komga users must have email addresses that match their authentik users.

User identifier

You can configure Komga to use either the sub or preferred_username as the UID field under user-name-attribute. When using preferred_username as the user identifier, ensure that the Allow users to change username setting is disabled to prevent authentication issues. The sub option uses a unique, stable identifier for the user, while preferred_username uses the username configured in authentik.

application.yml
spring:
    security:
        oauth2:
            client:
                registration:
                    authentik:
                        provider: authentik
                        client-id: <Client ID from authentik>
                        client-secret: <Client Secret from authentik>
                        client-name: authentik
                        scope: openid,email,profile
                        authorization-grant-type: authorization_code
                        redirect-uri: "{baseUrl}/{action}/oauth2/code/{registrationId}"
                provider:
                    authentik:
                        user-name-attribute: preferred_username
                        issuer-uri: https://authentik.company/application/o/<application_slug>/

To have Komga create users during first login, also include the following option:

application.yml
komga:
    oauth2-account-creation: true

Restart Komga to apply the configuration.

Configuration verification​

To confirm that authentik is properly configured with Komga, open Komga and log in using authentik. You should be redirected to authentik for authentication and then redirected back to Komga as a logged-in user.

Resources​