CVE-2026-40768

Salon Booking System – Free Version <= 10.30.24 - Unauthenticated Insecure Direct Object Reference

2026-04-21 00:00
Lubin Regnault

Strategic Overview

Status
Patched in 10.30.25
Affected Plugin
Salon Booking System – Appointment Booking for Salons, Barbershops & Spas
Affected Version
<= 10.30.24
CVSS
5.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2026-40768
View all Salon Booking System – Appointment Booking for Salons, Barbershops & Spas vulnerabilities

At a glance

CVE-2026-40768 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Salon Booking System WordPress plugin, affecting versions <= 10.30.24. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 10.30.25; sites on affected versions should update now. Disclosed April 2026, reported by Lubin Regnault.

Vulnerability Overview

The Salon Booking System – Free Version plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 10.30.24 due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to perform unauthorized actions.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-639: Authorization Bypass Through User-Controlled Key

Reaching this weakness in Salon Booking System <= 10.30.24 takes no account at all. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Salon Booking System the fix is 10.30.25: builds <= 10.30.24 are affected, anything from 10.30.25 onward is not.

Remediation

Update to version 10.30.25, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Salon Booking System 10.30.25 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-40768https://www.wordfence.com/threat-intel/vulnerabilities/id/94fc7e20-0fd1-4a10-b821-e5aba4512f3fhttps://nvd.nist.gov/vuln/detail/CVE-2026-40768

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C