The WP Booking Calendar WordPress plugin before 10.6.5 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The WP Booking Calendar WordPress plugin before 10.6.3 does not sanitise and escape some of its Widgets settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The Appointment Booking Calendar WordPress plugin before 1.3.83 does not have CSRF checks in some places, which could allow attackers to make logged in users perform unwanted actions via CSRF attacks such as adding a booking to the calendar without paying.

The Booking Calendar WordPress plugin before 9.7.3.1 does not sanitize and escape some of its booking from data, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against administrators

The Booking calendar, Appointment Booking System WordPress plugin before 3.2.2 does not validate uploaded files, which could allow unauthenticated users to upload arbitrary files, such as PHP and achieve RCE

SQL Injection vulnerability in RM bookingcalendar module for PrestaShop versions 2.7.9 and before, allows remote attackers to execute arbitrary code, escalate privileges, and obtain sensitive information via icsexport.php.

Cross-site scripting vulnerability in Booking Calendar version 7.1 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Directory traversal vulnerability in Booking Calendar version 7.0 and earlier allows remote attackers to read arbitrary files via specially crafted captchachalange parameter.

SQL injection vulnerability in Booking Calendar plugin 8.4.3 for WordPress allows remote attackers to execute arbitrary SQL commands via the bookingid parameter.

An issue was discovered in the WpDevArt "Booking calendar, Appointment Booking System" plugin 2.2.2 for WordPress. Multiple parameters allow remote attackers to manipulate the values to change data such as prices.

The Booking Calendar WordPress plugin before 8.9.2 does not sanitise and escape the bookingtype parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting

The Booking Calendar plugin for WordPress is vulnerable to PHP Object Injection via the [bookingflextimeline] shortcode in versions up to, and including, 9.1. This could be exploited by subscriber-level users and above to call arbitrary PHP objects on a vulnerable site.