[IT-SecNots] [Security-news] Stop administrator login - Moderately critical - Access bypass - SA-CONTRIB-2026-183

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-183

Project: Stop administrator login [1]
Project machine name: stop_admin
Date: 2026-September-23
Security risk: *Moderately critical* 13 ∕ 25
AC:Basic/A:Admin/CI:Some/II:Some/E:Theoretical/TD:All [2]
Vulnerability: Access bypass

Affected versions: >=1.0 <1.6
CVE IDs: CVE-2026-96387
Description: 
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 [3]

Reported By: 
 * Pierre Rudloff (prudloff) [4] of the Drupal Security Team

Fixed By: 
 * Bram Driesen (bramdriesen) [5] of the Drupal Security Team

Coordinated By: 
 * Swan Kalata (akalata) [6] of the Drupal Security Team
 * Bram Driesen (bramdriesen) [7] of the Drupal Security Team
 * Greg Knaddison (greggles) [8] of the Drupal Security Team
 * Juraj Nemec (poker10) [9] of the Drupal Security Team
 * Pierre Rudloff (prudloff) [10] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [11]

[1] https://www.drupal.org/project/stop_admin
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/stop_admin/releases/8.x-1.6
[4] https://www.drupal.org/u/prudloff
[5] https://www.drupal.org/u/bramdriesen
[6] https://www.drupal.org/u/akalata
[7] https://www.drupal.org/u/bramdriesen
[8] https://www.drupal.org/u/greggles
[9] https://www.drupal.org/u/poker10
[10] https://www.drupal.org/u/prudloff
[11]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3623229

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