CVE-2026-18776: Unknown Truebooker

Critical severity, CVSS 9.8. EPSS: 0.5% 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 change the email address of arbitrary users, including administrators, and subsequently take over their account via the password reset flow.

Affected products

• Unknown Truebooker: before 1.2.7 (fixed in 1.2.7)

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