Description
WordPress Plugin Site Editor-WordPress Site Builder-Theme Builder and Page Builder is prone to a local file inclusion vulnerability because it fails to sufficiently verify user-supplied input. Exploiting this issue may allow an attacker to obtain sensitive information that could aid in further attacks. WordPress Plugin Site Editor-WordPress Site Builder-Theme Builder and Page Builder version 1.1.1 is vulnerable; prior versions may also be affected.
Remediation
Edit the source code to ensure that input is properly verified or disable the plugin until a fix is available
References
http://seclists.org/fulldisclosure/2018/Mar/40
https://www.exploit-db.com/exploits/44340/
https://packetstormsecurity.com/files/146796/WordPress-Site-Editor-1.1.1-Local-File-Inclusion.html