CVE-2026-14334: Booking calendar, Appointment Booking System <= 3.2.36 - Unauthenticated Stored XSS via SVG File Upload
The Booking calendar, Appointment Booking System WordPress plugin through 3.2.36 does not properly sanitize uploaded SVG files, allowing unauthenticated attackers to upload a file that bypasses the Booking calendar, Appointment Booking System WordPress plugin through 3.2.36's script-stripping and executes arbitrary JavaScript when the SVG is opened, including in the session of an administrator who reviews the submitted booking.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker does not need to authenticate. They can upload a crafted SVG file that bypasses the plugin's script-stripping controls.
When does the malicious JavaScript execute?
The JavaScript executes when the uploaded SVG is opened. This can affect an administrator who opens an SVG submitted through a booking.
Which plugin versions are affected?
The issue affects Booking calendar, Appointment Booking System versions through 3.2.36.