---
id: CVE-2026-100163
title: >-
  The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for
  WordPress plugin for WordPress is vulnerable to Authentication Bypass in
  versions up to, and including, 5.7.2 via the
  OsCustomerHelper::create_wp_user_for_customer() …
summary: >-
  The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for
  WordPress plugin for WordPress is vulnerable to Authentication Bypass in
  versions up to, and including, 5.7.2 via the
  OsCustomerHelper::create_wp_user_for_customer() …
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-287
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T08:17:02.257'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100163'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/latepoint.php#L1072
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/customer_helper.php#L259
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/customer_helper.php#L274
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/steps_helper.php#L2146
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/steps_helper.php#L2156
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.3/lib/helpers/customer_helper.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/2a942d71-7172-4e02-9faa-3a2c1c9e7fbd?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-10-14T08:23:04.337Z'
---

## Overview

The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 5.7.2 via the OsCustomerHelper::create_wp_user_for_customer() helper reached from the public process_step_customer() booking step. When the 'Use WordPress users as customers' option is enabled, the helper falls back from email_exists() to username_exists( $customer->email ), which matches any WordPress user whose user_login equals the victim customer's email even when that user's user_email is completely different, and links that WordPress user's ID into the victim's LatePoint customer row (only privileged roles are excluded; Subscriber is allowed). This makes it possible for authenticated attackers, with Subscriber-level access and above, to take over another customer's LatePoint account — accessing their bookings, service, agent, and calendar data, and having the victim customer's email overwritten with the attacker's on next login — by holding a Subscriber account whose user_login equals the victim's email and submitting an unauthenticated public booking step registration request.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.