Stop administrator login - Moderately critical - Access bypass - SA-CONTRIB-2026-183

Project: Stop administrator loginProject machine name: stop_adminDate: 2026-September-23Security risk: Moderately critical 13 ∕ 25 AC:Basic/A:Admin/CI:Some/II:Some/E:Theoretical/TD:AllVulnerability: Access bypassAffected versions: >=1.0 <1.6CVE IDs: CVE-2026-96387Description: This module enables sites to block access for the administrative user account (user 1) or users with the administrator role.
The module does not sufficiently enforce these access restrictions across all supported authentication mechanisms. As a result, a blocked administrative user may still be able to authenticate through certain alternative authentication methods.
This vulnerability is mitigated by the fact that an attacker must possess valid credentials for a user with the administrator role, and must authenticate using a less commonly used authentication mechanism.Solution: Install the latest version:

• If you use the Stop Administrator Login module, upgrade to Stop Administrator Login 8.x-1.6

Reported By: 

• Pierre Rudloff (prudloff) of the Drupal Security Team

Fixed By: 

• Bram Driesen (bramdriesen) of the Drupal Security Team

Coordinated By: 

• Swan Kalata (akalata) of the Drupal Security Team
• Bram Driesen (bramdriesen) of the Drupal Security Team
• Greg Knaddison (greggles) of the Drupal Security Team
• Juraj Nemec (poker10) of the Drupal Security Team
• Pierre Rudloff (prudloff) of the Drupal Security Team