CVE-2026-87891: Unknown Rox Appointment Booking

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

The Rox Appointment Booking WordPress plugin before 1.2.0 does not perform any capability or authorization check when saving its holiday schedule, allowing unauthenticated attackers to overwrite the dates the booking system treats as unavailable, which can block legitimate bookings or open dates the site owner intended to keep closed.

Affected products

• Unknown Rox Appointment Booking: before 1.2.0 (fixed in 1.2.0)

Published 2026-09-12. Last modified 2026-09-14.