[Security-news] Simple OAuth (OAuth2) & OpenID Connect - Critical - Access bypass - SA-CONTRIB-2025-114

[security-news at drupal.org]

View online: https://www.drupal.org/sa-contrib-2025-114

Project: Simple OAuth (OAuth2) & OpenID Connect [1]
Date: 2025-October-29
Security risk: *Critical* 15 ∕ 25
AC:Complex/A:None/CI:Some/II:Some/E:Theoretical/TD:All [2]
Vulnerability: Access bypass

Affected versions: <6.0.7
CVE IDs: CVE-2025-12466
Description: 
This module introduces an OAuth 2.0 authorization server, which can be
configured to protect your Drupal instance with access tokens, or allow
clients to request new access tokens and refresh them.

The module doesn't sufficiently respect granted scopes, it affects all access
checks that are based on roles. For example: routes that have the _role
requirement, can be bypassed with an access token.

This vulnerability is mitigated by the fact that an attacker must have the
access token in possession and the user related to the token must have the
associated (role requirement) roles assigned.

Solution: 
Install the latest version:

  * If you use the "Simple OAuth (OAuth2) & OpenID Connect" module for Drupal,
    upgrade to Simple OAuth (OAuth2) & OpenID Connect  6.0.7 [3]

Reported By: 
  * coffeemakr [4]

Fixed By: 
  * Bojan Bogdanovic (bojan_dev) [5]
  * coffeemakr [6]
  * Juraj Nemec (poker10) [7] of the Drupal Security Team

Coordinated By: 
  * Greg Knaddison (greggles) [8] of the Drupal Security Team
  * Juraj Nemec (poker10) [9] of the Drupal Security Team

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Contribution record [10]

[1] https://www.drupal.org/project/simple_oauth
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/simple_oauth/releases/6.0.7
[4] https://www.drupal.org/u/coffeemakr
[5] https://www.drupal.org/u/bojan_dev
[6] https://www.drupal.org/u/coffeemakr
[7] https://www.drupal.org/u/poker10
[8] https://www.drupal.org/u/greggles
[9] https://www.drupal.org/u/poker10
[10]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3555020