CVE-2026-18315
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- security@wordfence.com
References
- https://plugins.svn.wordpress.org/truebooker-appointment-booking/tags/1.2.6/main/config/truebooker-style.php
- https://plugins.svn.wordpress.org/truebooker-appointment-booking/tags/1.2.6/main/function_ajax.php
- https://plugins.svn.wordpress.org/truebooker-appointment-booking/tags/1.2.6/templates/login-register.php
- https://plugins.trac.wordpress.org/changeset/3640018/truebooker-appointment-booking
- https://www.wordfence.com/threat-intel/vulnerabilities/id/73251a74-5be3-446b-8e0a-ff2d1484c467?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.