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GHSA-4f8q-mwgc-3mwccritical9.8

Drupal OAuth2 Server Missing Authorization vulnerability

Impact

Provides OAuth2 server functionality based on the oauth2-server-php library.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

drupal/oauth2_server Packagist
Affected rangeRecorded fix
Earlier releases before 2.1.0Ecosystem versions2.1.0

Version evidence: OSV · GHSA-4f8q-mwgc-3mwc

View original version evidence (0 explicit versions)
drupal/oauth2_server Packagist:https://packages.drupal.org/8
Affected rangeRecorded fix
Earlier releases before 2.1.0Ecosystem versions2.1.0

Version evidence: OSV · DRUPAL-CONTRIB-2025-020

View original version evidence (0 explicit versions)

Original source description

Provides OAuth2 server functionality based on the oauth2-server-php library.

The module does not consistently enforce admin configurations allowing users on a disabled server to still authenticate.

References