{"id":"CVE-2026-108758","published":"2026-10-11T13:17:21.020","lastModified":"2026-10-16T19:21:14.417","description":"Easy!Appointments through 1.6.0 contains an authorization bypass vulnerability in Booking::register() that allows unauthenticated attackers to modify any appointment by supplying an appointment id without its hash. Attackers can enumerate sequential appointment ids with a self-asserted manage_mode flag to rewrite appointment details, rebind them to attacker-controlled customers, and obtain management hashes for rescheduling or cancellation.","cvssScore":8.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","cwes":["CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/alextselegidis/easyappointments","tags":[]},{"url":"https://github.com/alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587","tags":[]},{"url":"https://github.com/alextselegidis/easyappointments/commit/09c6fb30b6aac0830a820d6bec3d2eb241daf150","tags":[]},{"url":"https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover","tags":[]},{"url":"https://www.vulncheck.com/advisories/easy-appointments-through-1.6.0-authorization-bypass-via-booking-register-endpoint","tags":[]},{"url":"https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover","tags":[]}],"exploitRefs":[{"url":"https://github.com/alextselegidis/easyappointments","tags":[]},{"url":"https://github.com/alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587","tags":[]},{"url":"https://github.com/alextselegidis/easyappointments/commit/09c6fb30b6aac0830a820d6bec3d2eb241daf150","tags":[]}],"hasPoc":true,"ai":null}