Easy!Appointments has unauthenticated customer PII disclosure on booking reschedule page — CVE-2026-52837

Summary

## Summary 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…

Timeline

Published by source

2026-07-29

Risk context

• Reported severity or threat level: medium.
• Review exposure for the affected product or family: composer: alextselegidis/easyappointments.

Product

composer: alextselegidis/easyappointments

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

CVE-2026-52837

Source

GitHub

Vendor

GitHub

Published by source

2026-07-29

Last source activity

2026-07-29

Additional identifiers

GHSA-XGR6-PQJV-3PF8

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.