DRUPAL-CONTRIB-2026-027

This module enables you to use an external OpenID Connect login provider to authenticate and log in users on your site. If a user signs in with a login provider for the first time on the website, a new Drupal user will be created. The module doesn't sufficiently validate the uniqueness of certain...

OpenID Connect / OAuth client - Less critical - Access bypass - SA-CONTRIB-2026-027

This module enables you to use an external OpenID Connect login provider to authenticate and log in users on your site. If a user signs in with a login provider for the first time on the website, a new Drupal user will be created. The module doesn't sufficiently validate the uniqueness of certain...

DRUPAL-CORE-2024-004

Drupal's uniqueness checking for certain user fields is inconsistent depending on the database engine and its collation. As a result, a user may be able to register with the same email address as another user. This may lead to data integrity issues...