Description
WordPress Plugin Flat Preloader is prone to a cross-site request forgery vulnerability. Exploiting this issue may allow a remote attacker to perform certain administrative actions and gain unauthorized access to the affected application; other attacks are also possible. WordPress Plugin Flat Preloader version 1.5.3 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.5.4 or latest
References
https://sploitus.com/exploit?id=WPEX-ID:972ECDE8-3D44-4DD9-81E3-643D8737434F
https://plugins.svn.wordpress.org/flat-preloader/trunk/readme.txt