The Booking Calendar and Booking Calendar Pro plugins for WordPress are vulnerable to Reflected Cross-Site Scripting via the ‘calendar_id’ parameter in all versions up to, and including, 3.2.19 and 11.2.19 respectively, due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Missing Authorization vulnerability in CodePeople Appointment Hour Booking allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Appointment Hour Booking: from n/a through 1.4.23.

The Appointment Booking Calendar Plugin and Scheduling Plugin – BookingPress plugin for WordPress is vulnerable to SQL Injection via the 'category' parameter of the 'bookingpress_form' shortcode in all versions up to, and including, 1.1.21 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The Booking Calendar WpDevArt plugin is vulnerable to time-based, blind SQL injection via the `id` parameter in the “wpdevart_booking_calendar” shortcode in versions up to, and including, 3.2.19 due to insufficient escaping on the user-supplied parameter and lack of sufficient preparation on the existing SQL query. The vulnerability requires the “delete_prev_date” theme option being enabled. This makes it possible for authenticated attackers, with contributor-level access or above, to append additional SQL queries into already existing query that can be used to extract sensitive information such as passwords from the database.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in outstrip Instant Appointment allows SQL Injection.This issue affects Instant Appointment: from n/a through 1.2.

The WP Timetics- AI-powered Appointment Booking Calendar and Online Scheduling Plugin plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the /wp-json/timetics/v1/customers/ REST API endpoint in all versions up to, and including, 1.0.27. This makes it possible for authenticated attackers, with Timetics Customer access and above, to delete arbitrary users.

Missing Authorization vulnerability in WpDevArt Booking calendar, Appointment Booking System allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Booking calendar, Appointment Booking System: from n/a through 3.2.3.

Cross-Site Request Forgery (CSRF) vulnerability in Faster Themes FastBook – Responsive Appointment Booking and Scheduling System allows Stored XSS.This issue affects FastBook – Responsive Appointment Booking and Scheduling System: from n/a through 1.1.

The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 3.2.15 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.

The Booking & Appointment Plugin for WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'save_google_calendar_data' function in versions up to, and including, 6.9.0. This makes it possible for authenticated attackers, with subscriber-level permissions or above to update the site options arbitrarily.