{"id":"CVE-2026-108758","title":"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","summary":"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 enumerat…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","cwe":["CWE-639"],"published":"2026-10-11","updated":"2026-10-11","sourceUpdated":"2026-10-11T13:17:21.020","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-108758","references":[{"url":"https://github.com/alextselegidis/easyappointments","label":"disclosure@vulncheck.com"},{"url":"https://github.com/alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587","label":"disclosure@vulncheck.com"},{"url":"https://github.com/alextselegidis/easyappointments/commit/09c6fb30b6aac0830a820d6bec3d2eb241daf150","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/easy-appointments-through-1.6.0-authorization-bypass-via-booking-register-endpoint","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-11T13:51:17.041Z","slug":"CVE-2026-108758","body":"## Overview\n\nEasy!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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}