medium6.9
CVE-2026-52837
Easy!Appointments has unauthenticated customer PII disclosure on booking reschedule page
Impact
Easy!Appointments is a self hosted appointment scheduler. In versions up to and including 1.5.2, the booking reschedule view at `/index.php/booking/reschedule/{appointment_hash}` (handled by `Booking::index()`) embeds the entire customer record as inline JavaScript (`const vars = {... "customer_data": {...}, ...}`) without authentication and without field whitelisting. Anyone in possession of the 12-character `appointment_hash` — which appears in plain text in reschedule emails, confirmation page URLs, and operator-side calendar links — can read every column of that customer's row in the `ea_users` table. Version 1.6.0 contains a patch.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | alextselegidis/easyappointments | <= 1.5.2 | none recorded |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-xgr6-pqjv-3pf8
- https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-xgr6-pqjv-3pf8
- https://nvd.nist.gov/vuln/detail/CVE-2026-52837
- https://github.com/alextselegidis/easyappointments/commit/40bb0b31b531540bc9006efce4220eb0a437ed2b
- https://github.com/alextselegidis/easyappointments/releases/tag/1.6.0