Your server appears to be vulnerable. We recommend upgrading Apache Struts to versions 2.3.32 or 18.104.22.168. Our blog contains further information about the vulnerability.
Your server is not vulnerable! Either you have already patched, or the URL entered does not point to a server that is running Apache Struts. If this is incorrect, feel free to double check your URL and try again.
We're sorry, but there was an error while checking your server. Please check your URL or try again later.