When itthey hasare passed multiple parameters with the same name, here is how the backend behaves.<ref name="owasp_hpp">{{cite web|title=WSTG - Latest:Testing for HTTP Parameter Pollution|url=https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/07-Input_Validation_Testing/04-Testing_for_HTTP_Parameter_Pollution}}</ref>