Description
WordPress Plugin Booking calendar, Appointment Booking System is prone to multiple vulnerabilities, including cross-site scripting and cross-site request forgery vulnerabilities. Exploiting these issues could allow an attacker to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site, allowing the attacker to steal cookie-based authentication credentials and launch other attacks, or to perform certain administrative actions and gain unauthorized access to the affected application. WordPress Plugin Booking calendar, Appointment Booking System version 2.1.7 is vulnerable; prior versions may also be affected.
Remediation
Edit the source code to ensure that input is properly sanitised and CSRF protection is implemented with Nonce-like mechanism or disable the plugin until a fix is available
References
Related Vulnerabilities
Ruby Improper Link Resolution Before File Access ('Link Following') Vulnerability (CVE-2011-1004)
Plone CMS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2012-5497)
WordPress 'wp-admin/admin.php' Module Configuration Security Bypass Vulnerability (0.6.2 - 2.8)
WordPress Plugin TheCartPress eCommerce Shopping Cart Order Information Security Bypass (1.1.9.2)