CVE-2026-108758

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.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/alextselegidis/easyappointments
https://github.com/alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587
https://github.com/alextselegidis/easyappointments/commit/09c6fb30b6aac0830a820d6bec3d2eb241daf150
https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover
https://www.vulncheck.com/advisories/easy-appointments-through-1.6.0-authorization-bypass-via-booking-register-endpoint
https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover

Configurations

No configuration.

History

13 Oct 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover -~~	() https://hackmd.io/@haind/easyappointments-booking-register-appointment-takeover -

11 Oct 2026, 13:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-11 13:17

Updated : 2026-10-16 19:21

NVD link : CVE-2026-108758

Mitre link : CVE-2026-108758

CVE.ORG link : CVE-2026-108758

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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