The VikRentCar Car Rental Management System plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the do_updatecar and createcar functions in all versions up to, and including, 1.4.3. 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.
https://plugins.trac.wordpress.org/changeset/3317493/
https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.3/admin/controller.php#L1698
https://plugins.trac.wordpress.org/browser/vikrentcar/tags/1.4.3/admin/controller.php#L1418