CVE-2026-11446 Booktics – Booking Calendar for Appointments and Service Businesses <= 1.0.23 - Missing Authorization
Unauthenticated attackers can overwrite customer contact details in the Booktics WordPress plugin by exploiting a missing authorization check in the REST API.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11446?
CVE-2026-11446 is a medium-severity missing authorization vulnerability in arraytics Booktics – Appointment Booking Calendar for Service Businesses, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-11446?
How do I fix CVE-2026-11446?
No fix has been published for CVE-2026-11446 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-11446 being exploited?
There is no known exploitation of CVE-2026-11446 in the wild and no public exploit code.
Sources
Also known as GHSA-gf52-5www-f3x3.