CVE-2026-11866
Medium
Description
The Appointment Booking Plugin WordPress plugin before 5.6.3 does not validate a CSRF nonce on several state-changing actions handled by its central request dispatcher, allowing attackers to perform privileged actions, such as overwriting the booking-form configuration or disconnecting the connected payment gateway, via Cross-Site Request Forgery against a logged-in administrator.
SeverityMedium
CVSS5.4
Exploit probability—
ProductAppointment Booking Plugin
PublishedJul 16, 2026
First seenJul 16, 2026
Weakness typeCWE-352Cross-site request forgery (CSRF)
How to fix
Update
- Appointment Booking Plugin5.6.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Appointment Booking Plugin | v < 5.6.3 | 5.6.3 |
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