The host is installed with Ruby on Rails before 3.0.14, 3.1.x before 3.1.6 or 3.2.x before 3.2.6 and is prone to unsafe SQL query generation vulnerability. A flaw is present in the application, which fails to properly consider differences in parameter handling between the Active Record component and the Rack interface. Successful exploitation allows bypass intended database-query restrictions and perform NULL checks via a crafted request.