CVE-2021-24232: Elbtide Advanced Booking Calendar

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

The Advanced Booking Calendar WordPress plugin before 1.6.8 does not sanitise the license error message when output in the settings page, leading to an authenticated reflected Cross-Site Scripting issue

Affected products

• Elbtide Advanced Booking Calendar: before 1.6.8 (fixed in 1.6.8)

Published 2021-04-22. Last modified 2026-06-17.