CVE-2021-24673: Dwbooster Appointment Hour Booking

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The Appointment Hour Booking WordPress plugin before 1.3.16 does not escape some of the Calendar Form settings, allowing high privilege users to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Affected products

• Dwbooster Appointment Hour Booking: before 1.3.16 (fixed in 1.3.16)

Published 2021-10-04. Last modified 2026-06-17.