CVE-2026-86839
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.
- Published Sep 27, 2026
- CVSS 3.8 low
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available