Description
WordPress Plugin Ghost is prone to a vulnerability that lets attackers download arbitrary files because the application fails to sufficiently verify user-supplied input. This may allow an attacker to gain access to sensitive information, which may aid in launching further attacks. WordPress Plugin Ghost version 0.5.5 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 0.5.6 or latest
References
https://www.exploit-db.com/exploits/39752/
https://packetstormsecurity.com/files/136887/WordPress-Export-To-Ghost-Export-Download.html