{"id":"CVE-2026-108758","summary":"Easy!Appointments through 1.6.0 Authorization Bypass via booking/register Endpoint","details":"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.","modified":"2026-10-15T02:30:28.280837892Z","published":"2026-10-11T12:19:55.847Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108758.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108758.json"},{"type":"ADVISORY","url":"https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108758"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/easy-appointments-through-1.6.0-authorization-bypass-via-booking-register-endpoint"},{"type":"FIX","url":"https://github.com/alextselegidis/easyappointments/commit/09c6fb30b6aac0830a820d6bec3d2eb241daf150"},{"type":"PACKAGE","url":"https://github.com/alextselegidis/easyappointments"},{"type":"ARTICLE","url":"https://github.com/alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/alextselegidis/easyappointments","events":[{"introduced":"0"},{"fixed":"4bc7ecd51f3dade8e041558f2c23dda65bd6c43e"},{"fixed":"09c6fb30b6aac0830a820d6bec3d2eb241daf150"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.6.0"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["1.6.0-beta.2","1.6.0-beta.1","1.6.0-alpha.1","1.5.2-beta.1","1.5.1","1.5.1-beta.1","1.5.0","1.5.0-beta.1","1.5.0-alpha.1","1.5.0-dev.4","1.5.0-dev.3","1.5.0-dev.2","1.5.0-dev.1","1.3.0-beta.2","1.3.0-beta.1","1.3.0-alpha.1","1.2.0-beta.1","1.2.0-alpha.1","1.1.0","1.1.0-beta.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108758.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"}]}