CVE-2026-108758
8.2, highAlextselegidis easyappointments Authorization Bypass Through User-Controlled Key Vulnerability
- CVSS
- 8.2, high high CVSS v3.1
- EPSS, next 30 days
- 0.3% higher than 16.8% of scored CVEs
- Exploitation
- No public evidence
- Published
- 11 Oct 20266 days ago
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.
Details
- Vendor
- Alextselegidis
- Product
- easyappointments
- Weakness
- CWE-639 (opens in a new tab)
- Status
- Received
- Updated
- 11 Oct 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
References 5
Patches and fixes 1
Other references 4
- github.com /alextselegidis/easyappointments (opens in a new tab)
- github.com /alextselegidis/easyappointments/blob/4bc7ecd51f3dade8e041558f2c23dda65bd6c43e/application/controllers/Booking.php#L368-L587 (opens in a new tab)
- hackmd.io /@haind/easyappointments-booking-register-appointment-takeover (opens in a new tab)
- vulncheck.com /advisories/easy-appointments-through-1.6.0-authorization-bypass-via-booking-register-endpoint (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.