# Salon Booking System – Appointment Booking for Salons, Barbershops & Spas <= 10.31.9 - Unauthenticated Sensitive Information Exposure via Publicly Accessible Booking Calendar Files

- **ID:** WPSEC-2026-0854
- **Plugin:** Salon Booking System – Appointment Booking for Salons, Barbershops & Spas (`salon-booking-system`), https://wordpress.org/plugins/salon-booking-system/
- **Affected versions:** all versions before 10.31.10
- **Fixed in:** 10.31.10 (Update to 10.31.10 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-552
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/salon-booking-system
- **Fix released:** 2026-10-12
- **Published:** 2026-10-13
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0854/

## Description

The Salon Booking System plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 10.31.9 due to booking calendar (.ics) files being written to a predictable, publicly accessible location (wp-content/uploads/Mycal_{bookingId}.ics) and left there for days after the booking date. This makes it possible for unauthenticated attackers to enumerate sequential booking IDs and download calendar files containing customers' booking details.

## References

- https://wpsec.com/vuln/WPSEC-2026-0854/
- https://plugins.svn.wordpress.org/salon-booking-system/tags/10.31.10/
- https://wordpress.org/plugins/salon-booking-system/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0854/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.