Drupal SSO integration will allow the users to log in to the WordPress using the Drupal site Credentials. This SSO integration is achieved by the miniOrange OAuth / OpenID Connect server module which uses the OAuth 2.0 and OpenID Connect protocol. The module is compatible with all OAuth / OpenID Connect clients and is available for Drupal 7, Drupal 8, Drupal 9, and Drupal 10.

In this setup guide, we will help you configure the Single Sign-on login using the OAuth protocol between the Drupal site and the WordPress.

Configure Application in WordPress:

• Log into your WordPress site.
• Go to the WordPress Dashboard -> Plugins and click on Add New.
• Search for the OAuth Single Sign On – SSO (OAuth Client) plugin and click on the Install Now button.

• Once installed click on Activate.
• Go to the Configure OAuth tab and click on the Add New Application

• Search for Drupal under the search bar and click on it.

• Copy the Callback URL and click on the Next button.

Configure Drupal as an OAuth Server:

• Navigate to the Drupal site and go to the Configuration -> miniOrange OAuth server configuration -> OAuth Client tab.
• Click on the Add Client button to add a new application.

• Enter the name of your application under the Application Name text field.
• Paste the copied Callback/Redirect URL from the WordPress site under the Callback/Redirect URL text field.
• You can add multiple Callback URLs by clicking on the Add More button next to the Callback/Redirect URL text field.

• Click on the Save button.

Configure WordPress as OAuth Client:

• Add the Endpoints as specified in the table below (You can also get the same from the Scope & Endpoints section of the Drupal site -> Configuration -> miniOrange OAuth server configuration -> OAuth Client):-

  Authorize Endpoint	{base_url_of_the_drupal_site}/mo/oauth2/authorize
  Token Endpoint	{base_url_of_the_drupal_site}/mo/oauth2/token
  Userinfo Endpoint	{base_url_of_the_drupal_site}/mo/oauth2/userinfo


• Click on the Next button.
• Navigate back to the Drupal site and copy the Client ID.
• Paste the copied Client ID under the Client ID text field in the WordPress site.

• Similarly, copy the Client Secret from the Drupal site and paste it into the Client Secret text field in the WordPress site.

• Navigate to the Drupal site and copy the Scope from the Scopes and Endpoints section.
• Paste the copied Scope under the Scopes text field in the WordPress site. Click on the Next button.

• Confirm the Configurations and click on the Finish button.

• Once the Test Configuration is successful, click on the Done button.

• Click on the Finish button.

• You have successfully configured the OAuth server module with WordPress as the OAuth client and Drupal as the OAuth server.

Let’s see how it works:

• Open a new window/private browser and navigate to the login page of the WordPress website.
• Click on the Login with Drupal button.

• Enter the Drupal credentials and click on the Log in button.

• You will be logged into WordPress using Drupal credentials.

You have successfully performed the SSO between WordPress and Drupal!