CVE-2026-18778 TrueBooker Appointment Booking < 1.2.7 - Unauthenticated Customer PII Disclosure via Multiple AJAX Actions
Unauthenticated attackers can retrieve customer PII via AJAX actions in the TrueBooker WordPress plugin due to missing authorization checks.
- 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-2026-18778?
CVE-2026-18778 is a medium-severity missing authorization vulnerability in Unknown TrueBooker, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in some of its AJAX actions, allowing unauthenticated users to retrieve the personal information of customers who booked an appointment, including their name, email address, phone number and postal address.
Weakness: CWE-200
Which versions are affected by CVE-2026-18778?
How do I fix CVE-2026-18778?
No fix has been published for CVE-2026-18778 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-2026-18778 being exploited?
There is no known exploitation of CVE-2026-18778 in the wild and no public exploit code.
Sources
Also known as GHSA-gppp-m845-93gc.