web@all is a PHP content management system (CMS). If you know about it,you nearly can use it to do anything.
web@all CMS suffers from multiple stored and reflected cross-site scripting vulnerabilities. The issues are triggered when input passed via several parameters to several scripts is not properly sanitized before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.