CVE-2016-20069 [HIGH] – WordPress Booking Calendar Contact Form 1.0.23 contains an unauthenticated blind SQL injec

WordPress Booking Calendar Contact Form 1.0.23 contains an unauthenticated blind SQL injection vulnerability in the shortcode function that fails to sanitize the calendar parameter before using it in database queries. Attackers can inject SQL commands through the calendar shortcode parameter to execute arbitrary SQL queries and extract sensitive database information.