The host is running Sockso and is prone to persistent cross site scripting vulnerability.
Successful exploitation will allow remote attackers to insert arbitrary HTML and script code, which will be executed in a user's browser session in the context of an affected site. Impact Level: Application
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
The flaw is due to improper validation of user supplied input via the 'name' parameter to user or register.
Sockso version 1.51 and prior