WP JobSearch <= 2.6.7 - Unauthenticated Arbitrary File Upload

The JobSearch WP Job Board plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the jobsearch_location_load_excel_file_callback() function in all versions up to, and including, 2.6.7. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.