CVE-2022-0694: Elbtide Advanced Booking Calendar

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

The Advanced Booking Calendar WordPress plugin before 1.7.0 does not validate and escape the calendar parameter before using it in a SQL statement via the abc_booking_getSingleCalendar AJAX action (available to both unauthenticated and authenticated users), leading to an unauthenticated SQL injection

Affected products

• Elbtide Advanced Booking Calendar: before 1.7.0 (fixed in 1.7.0)

Published 2022-03-21. Last modified 2026-06-17.