CVE-2026-18778: Unknown Truebooker

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in some of its AJAX actions, allowing unauthenticated users to retrieve the personal information of customers who booked an appointment, including their name, email address, phone number and postal address.

Affected products

• Unknown Truebooker: before 1.2.7 (fixed in 1.2.7)

Published 2026-08-19. Last modified 2026-08-26.