The Contact Form by Bit Form: Multi Step Form, Calculation Contact Form, Payment Contact Form & Custom Contact Form builder plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the bitform-form-entry-edit endpoint in all versions up to, and including, 2.17.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to view all form submissions from other users.

The Contact Form by Bit Form: Multi Step Form, Calculation Contact Form, Payment Contact Form & Custom Contact Form builder plugin for WordPress is vulnerable to arbitrary file read in all versions up to, and including, 2.15.2 due to improper input validation within the iconUpload function. This makes it possible for authenticated attackers, with Administrator-level access and above, to leverage a PHP filter chain attack and read the contents of arbitrary files on the server, which can contain sensitive information.

The Bit Form plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'iconUpload' function in all versions up to, and including, 2.13.3. This makes it possible for authenticated attackers, with administrator-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.