Cross Site Scripting vulnerability in Wonder CMS v.3.2.0 thru v.3.4.2 allows a remote attacker to execute arbitrary code via a crafted script uploaded to the installModule component.
https://www.exploit-db.com/exploits/52271
https://packetstorm.news/files/id/190575/
https://gist.github.com/prodigiousMind/fc69a79629c4ba9ee88a7ad526043413