CVE-2016-20069: Dwbooster Booking Calendar Contact Form

High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Dwbooster Booking Calendar Contact Form: up to and including 1.0.23

Published 2026-06-15. Last modified 2026-06-17.