CVE-2026-86839: Bookly < 28.3 - Staff+ Appointment and Payment Disclosure, Modification and Deletion via IDOR
The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker must be authenticated with a staff-level Bookly account. They can target appointment and payment records belonging to other staff members because the affected AJAX actions do not verify record ownership.
What information and actions are exposed?
A staff-level attacker can view, modify, or delete other staff members' appointment and payment records. The disclosed appointment data can include associated customers' personal information.
Which versions are affected?
Bookly versions before 28.3 are affected. Updating to version 28.3 or later addresses the affected version range.