Vulnerability Description
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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/changeset/3640018/truebooker-appointment-book
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f0d3f7cb-4974-4b0f-965
FAQ
What is CVE-2026-16142?
CVE-2026-16142 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 unauthen...
How severe is CVE-2026-16142?
CVE-2026-16142 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-16142?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.