OAuth Login - OAuth OIDC SSO security updates, in plain English

OAuth Login - OAuth OIDC SSO

474 sites report using it · on drupal.org · 1 security update explained here

This module lets users log in to the website using external identity providers.

Below is every security update for OAuth Login - OAuth OIDC SSO that this site has covered, newest first. Each one says who could exploit it, whether it applies to your site, how urgent it is, and what to tell your developer. If your site uses this module and you are not sure which version, that is the first question to ask whoever looks after it.

OAuth Login - OAuth OIDC SSO

Critical · 474 sites report using it · SA-CONTRIB-2026-284 · on drupal.org · Week of 28 October 2026

The module does not properly check access on a setup page or verify email addresses from the identity provider. Someone could log in as any existing user if they know their email address and change or add data. They could not do this without an account on the external identity provider.

Who could do thisAnyone visiting the site. No login needed.
Does it apply to youAn attacker has an account with an identity provider the site uses and can change a value like their username on that provider.
Has it been used in attacksNo sign of it.
How urgentDrupal rates this critical. Cyber Essentials expects a fix within 14 days. Do it this week.

Tell your developerUpdate OAuth Login - OAuth OIDC SSO to 3.1.1.

For developers: what the fix changed

The fix updates `oauth_login_oauth2.routing.yml` to require the `administer site configuration` permission and a CSRF token for the `oauth_login_oauth2.post_testconfig` route. It also updates `miniorange_oauth_client_mo_login` in `src/Controller/miniorange_oauth_clientController.php` to check the `email_verified` claim from the identity provider, blocking login if the email is unverified unless explicitly configured to trust it.

Also in this release Code style improvements, formatting fixes, and minor refactoring.

3.1.0 to 3.1.1 3 commits, 25 files.

README.md +9 −3
config/install/oauth_login_oauth2.settings.yml +1 −0 fix
config/schema/oauth_login_oauth2.schema.yml +2 −0 fix
css/oauth_login_oauth2.style_settings.css +0 −2
oauth_login_oauth2.install +15 −5
oauth_login_oauth2.links.task.yml +1 −1
oauth_login_oauth2.module +11 −11
oauth_login_oauth2.routing.yml +3 −1 fix
src/AccessToken.php +9 −5
src/AuthorizationEndpoint.php +19 −20
src/Controller/miniorange_oauth_clientController.php +81 −55 fix
src/Form/ConfirmDeleteForm.php +20 −9

Full diff, 3.1.0 to 3.1.1

The comparison is against the release immediately before the fix. If your site is on an older release, more will have changed.

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OAuth Login - OAuth OIDC SSO

OAuth Login - OAuth OIDC SSO

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