low2.6
CVE-2026-52838
Easy!Appointments disable_booking_message rendered as raw HTML on public booking page — Stored XSS
Impact
Easy!Appointments is a self hosted appointment scheduler. Versions prior to 1.6.0 allow administrators to define a custom "booking disabled" message through the booking settings page. That value is stored in the `disable_booking_message` setting via a rich-text editor and later passed directly to the public `booking_message` view without escaping or sanitization. An authenticated administrator can store HTML or JavaScript in this field, enable disabled-booking mode, and trigger stored XSS in every unauthenticated visitor who opens the public booking page. Version 1.6.0 fixes the issue.
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-996f-334j-67g7
- https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-996f-334j-67g7
- https://nvd.nist.gov/vuln/detail/CVE-2026-52838
- https://github.com/alextselegidis/easyappointments/commit/629a0415f54f75556c17f4f5d9c77fda1fdbdeae
- https://github.com/alextselegidis/easyappointments/releases/tag/1.6.0