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9.8
CVE-2026-16142: TrueBooker plugin for WordPress: Unauthenticated Account Email Change
CVE-2026-16142 · published 20 days ago
Summary
The TrueBooker plugin for WordPress allows unauthorized users to change any account's email address. This could lead to account takeover if an attacker gains control of the email address associated with an administrator account. To protect your account, update the TrueBooker plugin to the latest version.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| themetechmount | truebooker – appointment booking and scheduler system | <= 1.2.6 |
Original advisory text
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 unaut...
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.
Severity
9.8
Critical
CVSS 3.1: 9.8 (NVD)
Exploitation
EPSS <1%
Type
CWE-639Authorization Bypass Through User-Controlled Key
Timeline
Published15 Aug 2026
Updated30 Aug 2026
First seen15 Aug 2026
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