The Automated Logout module for Drupal is prone to an HTML-injection vulnerability because it fails to properly sanitize user-supplied input.
An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and launch other attacks.
Information
Drupal Automated Logout 7.x-4.3
Drupal Automated Logout 7.x-4.2
Drupal Automated Logout 7.x-4.1
Drupal Automated Logout 7.x-4.0
Exploit
An attacker can exploit this issue by enticing an unsuspecting user to follow a malicious URI.
References: