Intel

AIKIDO-2026-10366

drupal/openid_connect is vulnerable to Access bypass

Access bypassCVE-2026-3531 Published Mar 16, 2026

60

Medium Risk

This Affects:

PHPdrupal/openid_connect
1.0.0 - 1.4.0
Fixed in 1.5.0
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TL;DR

Affected versions of this package are affected by an access control bypass vulnerability in the authentication flow with external Identity Providers. If a user successfully authenticates with the Identity Provider but is subsequently denied access to the application due to custom code or a server error, the session at the Identity Provider may remain active. As a result, subsequent authentication attempts from the same environment may automatically succeed without requiring the user to reauthenticate, potentially leading to unintended access in shared computing environments.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range.

Background info

drupal/openid_connect is vulnerable to Access bypass in versions 1.0.0 - 1.4.0.

How to fix this

Upgrade the drupal/openid_connect library to the patch version.