Vulnerability · Published Jul 14, 2026 · Assigned by GitHub_M
CVE-2026-52837Easy!Appointments has unauthenticated customer PII disclosure on booking reschedule page
Medium 6.9
In plain English
A medium-severity information exposure in easyappointments from alextselegidis. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Official description
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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | alextselegidis/easyappointments | no fix listed | GHSA-xgr6-pqjv-3pf8 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| alextselegidis | easyappointments | < 1.6.0 |
Weakness: CWE-200, CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N