WordPress Appointment Booking Calendar plugin has an unspecified vulnerability

WordPress and WordPress plugin are both products of the WordPress Foundation. WordPress is a blogging platform developed using the PHP language. The platform supports the hosting of personal blog sites on servers with PHP and MySQL. WordPress plugin is an application plugin. WordPress Appointment Booking Calendar plugin 1.3.69 and prior versions contain a security vulnerability that could be exploited by an attacker to potentially compromise the confidentiality, availability, or integrity of the system. No details of the vulnerability are available at this time.