CVE-2026-52837 Easy!Appointments has unauthenticated customer PII disclosure on booking reschedule page
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-52837?
CVE-2026-52837 is a medium-severity vulnerability in alextselegidis easyappointments, published on 14 Jul 2026.
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.
Which versions are affected by CVE-2026-52837?
2 open source packages ship an affected version, including alextselegidis/easyappointments.
| Package | Affected | Fixed in |
|---|---|---|
alextselegidis/easyappointments Packagist | All versions to 1.5.2 | None |
alextselegidis/easyappointments Packagist | All versions to 1.5.2 | None |
How do I fix CVE-2026-52837?
No fix has been published for CVE-2026-52837 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-52837 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52837 exists.
Sources
Also known as GHSA-xgr6-pqjv-3pf8.