The default checkout completion rule in the commerce_order module in the Drupal Commerce module 7.x-1.x before 7.x-1.10 for Drupal uses the email address as…

The default checkout completion rule in the commerce_order module in the Drupal Commerce module 7.x-1.x before 7.x-1.10 for Drupal uses the email address as the username for new accounts created at checkout, which allows remote attackers to obtain sensitive information via unspecified vectors.