TrueBooker <= 1.2.6 - Unauthenticated Authorization Bypass Through User-Controlled Key to Account Takeover to 'truebooker_wp_user_id' Parameter
| CVE | CVE-2026-18315 |
|---|---|
| CVSS | 9.8 (Critical) |
| Publicly Published | August 18, 2026 |
| Last Updated | August 19, 2026 |
| Researcher |
Décio Brandão
|
Description
The TrueBooker – Appointment Booking and Scheduler System plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key leading to Account Takeover in all versions up to, and including, 1.2.6. This is due to the admin_user_create_cus AJAX handler lacking any authentication or capability check before passing the attacker-supplied truebooker_wp_user_id parameter directly to wp_update_user. This makes it possible for unauthenticated attackers to overwrite the email address of any WordPress user — including an administrator — and then complete the standard WordPress lost-password flow to fully take over the targeted account.
References
- plugins.svn.wordpress.org
- plugins.svn.wordpress.org
- plugins.svn.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for TrueBooker – Appointment Booking and Scheduler System
| Software Type | Plugin |
|---|---|
| Software Slug | truebooker-appointment-booking (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.2.7, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in TrueBooker – Appointment Booking and Scheduler System
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