We take security very seriously, and apologize to our community for any inconvenience or issues that have been caused. We urge users to update to the latest version, immediately since it contains a patch for this vulnerability and will keep you protected.
The next step will be to run a service to clean up the malware from your website. We recommend you install Sucuri Malware scanner to assist. This plugin will help you scan and remove Malware from your website. https://wordpress.org/plugins/sucuri-scanner/
Send us a support ticket by using this link https://filemanagerpro.io/contact we will be able to better assist you on your issue.