The WP STAGING WordPress Backup Plugin WordPress plugin before 3.5.0 does not prevent users with the administrator role from pinging conducting SSRF attacks, which may be a problem in multisite configurations.

The WP STAGING WordPress Backup Plugin – Migration Backup Restore plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the wpstg_processing AJAX action in all versions up to, and including, 3.4.3. This makes it possible for authenticated attackers, with administrator-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

The WP STAGING and WP STAGING Pro plugins for WordPress are vulnerable to Sensitive Information Exposure in versions up to, and including, 3.4.3, and versions up to, and including, 5.4.3, respectively, via the ajaxSendReport function. This makes it possible for unauthenticated attackers to extract sensitive data from a log file, including system information and (in the Pro version) license keys. Successful exploitation requires an administrator to have used the 'Contact Us' functionality along with the "Enable this option to automatically submit the log files." option.

The WP STAGING WordPress Backup Plugin WordPress plugin before 3.4.0, wp-staging-pro WordPress plugin before 5.4.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)