Are you using the WPBakery plugin on your WordPress website? If the answer is yes then we suggest that you please update your WPBakery immediately to version 6.4.1 or higher.
Wordfence has discovered a critical vulnerability in this plugin exposing over 4 million websites to this.
Also make sure you have the Wordfence security plugin installed and that it is updated.
If you require any assistance with any of this please contact our web hosting support team and we will try to assist.