The Essential Real Estate plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation on the 'ajaxUploadFonts' function in versions up to, and including, 4.3.5. This makes it possible for authenticated attackers with subscriber-level capabilities or above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

The Essential Real Estate WordPress plugin before 3.9.6 does not sanitize and escapes some parameters, which could allow users with a role as low as Admin to perform Cross-Site Scripting attacks.