CVE-2026-16142
CriticalCVSS 9.8Summary
The TrueBooker plugin for WordPress up to version 1.2.6 is vulnerable to account takeover. The add_front_user_update() AJAX handler is registered for unauthenticated users and accepts an arbitrary truebooker_wp_user_id value, which is passed directly to wp_update_user() without verifying authentication or ownership. This allows unauthenticated attackers to change any user's email address, including an administrator's, and then use the native password reset flow to take over the account.
Risk Assessment
Risk of administrator account takeover and full compromise of the WordPress site.
Recommendation
Update the TrueBooker plugin to the latest patched version.
Original NVD description (English source)
The TrueBooker plugin for WordPress is vulnerable to Account Takeover in all versions up to, and including, 1.2.6. This is due to the add_front_user_update() AJAX handler being registered for unauthenticated users and accepting an arbitrary truebooker_wp_user_id value, which is passed directly to wp_update_user() without verifying authentication or ownership. This makes it possible for unauthenticated attackers to change any WordPress user account email address, including an administrator, by submitting the target user ID and an attacker-controlled email address. An attacker can then use the native WordPress password reset flow to receive the reset link at the attacker-controlled email address and take over the account.