CVE-2026-11866

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.

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

EPSS

0.14% chance of exploitation in the next 30 days, 3th percentile

Published

2026-07-16

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/84e936b8-1978-4dc3-aa40-5ce49bfdc445/

References

• CVE Record
• NVD entry

Related

• CVE-2026-11855
• CVE-2026-11867
• CVE-2026-1184
• CVE-2026-11868
• CVE-2026-11834
• CVE-2026-11869