Auto Login URL – Less Critical – Access Bypass – DRUPAL-SA-CONTRIB-2017-034


This module lets you create auto login URLs programmatically on demand and through tokens.

The module does not provide sufficient protection when generating login URLs. An attacker could rebuild login URLs independently thereby logging in as another user.

This vulnerability is mitigated by the fact that an attacker needs to be able to exactly guess the second when a login URL was generated for a user. Furthermore the attacker also needs to know the victim user ID and login destination of the generated login URL. The attack is also mitigated by the fact that the module has flood control, so an attacker has only limited attempts to guess login URLs.

CVE identifier(s) issued

  • A CVE identifier will be requested, and added upon issuance, in accordance with Drupal Security Team processes.

Versions affected

  • Auto Login URL 8.x-1.x versions prior to 8.x-1.2.
  • Auto Login URL 7.x-1.x versions prior to 7.x-1.7.

Drupal core is not affected. If you do not use the contributed Auto Login URL module, there is nothing you need to do.


Install the latest version:

Also see the Auto Login URL project page.

Reported by

Fixed by

Coordinated by

Contact and More Information

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