What’s Vulnerable › Vulnerabilities

CVE-2026-14349: TrueBooker <= 1.2.3 - Missing Authorization to Unauthenticated Arbitrary User Email Modification via 'admin_addcustomer' AJAX Action

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-16
• Weakness: CWE-862

Description

The TrueBooker – Appointment Booking and Scheduler System plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.2.3. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the email address of arbitrary user accounts, including administrators, which can be leveraged to reset the account's password and gain access to it.

Affected products

• themetechmount TrueBooker – Appointment Booking and Scheduler System: through 1.2.3

References

• https://plugins.trac.wordpress.org/changeset?old_path=/truebooker-appointment-booking/tags/1.2.3/main/function_ajax.php&new_path=/truebooker-appointment-booking/tags/1.2.4/main/function_ajax.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3a61ddbc-9118-4cad-a639-7822606a3181?source=cve

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