CVE-2021-25040: Booking Calendar Project Booking Calendar

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

The Booking Calendar WordPress plugin before 8.9.2 does not sanitise and escape the booking_type parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting

Affected products

• Booking Calendar Project Booking Calendar: before 8.9.2 (fixed in 8.9.2)

Published 2022-01-03. Last modified 2026-06-17.