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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://plugins.svn.wordpress.org/truebooker-appointment-booking/tags/1.2.6/mai…
security@wordfence.com
https://plugins.svn.wordpress.org/truebooker-appointment-booking/tags/1.2.6/mai…
security@wordfence.com
https://plugins.svn.wordpress.org/truebooker-appointment-booking/tags/1.2.6/tem…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3640018/truebooker-appointment-boo…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/73251a74-5be3-446b-8e…
security@wordfence.com