---
id: CVE-2026-11446
title: >-
  The Booktics – Booking Calendar for Appointments and Service Businesses plugin
  for WordPress is vulnerable to unauthorized modification of data in all
  versions up to, and including, 1.0.23
summary: >-
  The Booktics – Booking Calendar for Appointments and Service Businesses plugin
  for WordPress is vulnerable to unauthorized modification of data in all
  versions up to, and including, 1.0.23. This is due to the
  create_order_permission() pe…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: arraytics
product: Booktics – Appointment Booking Calendar for Service Businesses
affected:
  - booktics_appointment_booking_calendar_for_service_businesses <= 1.0.23
published: '2026-09-11'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T17:17:07.800'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11446'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/booktics/tags/1.0.18/core/order/controllers/order-controller.php#L172
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/booktics/tags/1.0.18/core/order/controllers/order-controller.php#L863
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/booktics/tags/1.0.21/core/order/controllers/order-controller.php#L172
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/booktics/tags/1.0.21/core/order/controllers/order-controller.php#L885
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/c86956bf-b013-4a84-b77e-8b1007238b27?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T16:35:24.063578Z'
epss: 0.00235
epssPercentile: 0.12815
ingestedAt: '2026-09-11T11:32:42.776Z'
---

## Overview

The Booktics – Booking Calendar for Appointments and Service Businesses plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 1.0.23. This is due to the create_order_permission() permission callback on the POST /wp-json/booktics/v1/orders REST route unconditionally returning true, combined with find_and_update_guest() overwriting an existing customer record's stored name, phone, and wp_user_id whenever the caller-supplied email matches, with no proof of ownership. This makes it possible for unauthenticated attackers to overwrite the contact details (name and phone) of any existing customer whose email address they know, poisoning downstream reminder emails, SMS, calendar invites, and CRM data.

## Remediation

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