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DRUPAL-CONTRIB-2026-027

Affected: Packagist:https://packages.drupal.org/8: drupal/openid_connect

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 user fields 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.

EUVD-2026-277743

fkie_cve-2026-3532

Improper Handling of Case Sensitivity vulnerability in Drupal OpenID Connect / OAuth client allows Privilege Escalation.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

GHSA-g8fg-x943-8cvw

Improper Handling of Case Sensitivity vulnerability in Drupal OpenID Connect / OAuth client allows Privilege Escalation.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

WID-SEC-W-2026-0599 — Drupal Extensions: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in verschiedenen Drupal-Erweiterungen ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.