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CVE-2026-16142— TrueBooker <= 1.2.6 - Unauthenticated Account Takeover via Insecure Direct Object Reference in 'truebooker_wp_user_id' Parameter

Quick assessment

Affected
themetechmount TrueBooker – Appointment Booking and Scheduler System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress TrueBooker是WordPress基金会开源的一款内容管理系统的功能组件。 WordPress TrueBooker 1.2.6及之前版本存在授权问题漏洞，该漏洞源于add_front_user_update() AJAX处理程序注册给未认证用户且未验证身份或所有权，接受任意truebooker_wp_user_id值，可能导致未认证攻击者修改包括管理员在内的任意WordPress用户账户电子邮件地址，进而通过密码重置流程接管账户。

CVSS 9.8 · Critical EPSS 0.38% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
themetechmount TrueBooker – Appointment Booking and Scheduler System ≤ 1.2.6 affected
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I. Basic Information for CVE-2026-16142

Vulnerability Information
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Vulnerability Title
TrueBooker <= 1.2.6 - Unauthenticated Account Takeover via Insecure Direct Object Reference in 'truebooker_wp_user_id' Parameter
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress TrueBooker 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress TrueBooker是WordPress基金会开源的一款内容管理系统的功能组件。 WordPress TrueBooker 1.2.6及之前版本存在授权问题漏洞，该漏洞源于add_front_user_update() AJAX处理程序注册给未认证用户且未验证身份或所有权，接受任意truebooker_wp_user_id值，可能导致未认证攻击者修改包括管理员在内的任意WordPress用户账户电子邮件地址，进而通过密码重置流程接管账户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
themetechmount TrueBooker – Appointment Booking and Scheduler System 0 ~ 1.2.6 -

II. Public POCs for CVE-2026-16142

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III. Intelligence Information for CVE-2026-16142

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News Coverage for CVE-2026-16142 (1)

IV. Related Vulnerabilities

Same product: TrueBooker – Appointment Booking and Scheduler System
Same vendor: themetechmount
Same weakness: CWE-639

V. Comments for CVE-2026-16142

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