Staging Environment: Content and features may be unstable or change without notice.

Advisory Summary

gitlab/packagist/alextselegidis/easyappointments/CVE-2026-52838

Easy!Appointments disable_booking_message rendered as raw HTML on public booking page — Stored XSS Easy!Appointments allows administrators to define a custom "booking disabled" message through the booking settings page. That value is stored in the `disable_booking_message` setting via a rich-text editor and later passed directly to the public `booking_message` view without escaping or sanitization: ```php <p><?= vars('message_text') ?></p> ``` An authenticated administrator can store HTML or JavaScript in this field, enable disabled-booking mode, and trigger stored XSS in every unauthenticated visitor who opens the public booking page. ---
Mitigation Type Mitigation Data Mitigation Note