Vulnerability · Published Aug 19, 2026 · Assigned by WPScan
CVE-2026-18777TrueBooker Appointment Booking < 1.2.7 - Unauthenticated Arbitrary Appointment Status Change via update_appointment_status
Medium 5.3
In plain English
A medium-severity missing authorization in TrueBooker from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 76.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in one of its AJAX actions, allowing unauthenticated users to change the status of arbitrary appointments, as well as to trigger notification emails to the affected customers.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | TrueBooker | 0 – before 1.2.7 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://wpscan.com/vulnerability/05a09ba7-b781-4462-8c50-3a45f2757cb2/ exploit, vdb-entry, technical-description