CVE-2026-108758 Easy!Appointments through 1.6.0 Authorization Bypass via booking/register Endpoint
Unauthenticated attackers can modify any appointment and gain management access by bypassing authorization checks in the booking registration endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108758?
CVE-2026-108758 is a high-severity missing authorization vulnerability in alextselegidis easyappointments, published on 11 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-108758?
How do I fix CVE-2026-108758?
No fix has been published for CVE-2026-108758 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-108758 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108758 exists.
Sources
Also known as GHSA-q8ph-7hq3-m5wq.