Is Salon Booking System safe? Known vulnerabilities and latest version

The Salon Booking System WordPress plugin before 10.31.11 does not enforce a minimum of zero when subtracting a fixed-amount discount from a booking's total, allowing an unauthenticated visitor who knows a valid discount code to create a confirmed booking stored with a negative total.

The Salon Booking System WordPress plugin before 10.31.11 does not prevent users holding its custom salon staff role from assigning arbitrary capabilities to other accounts when editing a customer, allowing them to escalate any account to administrator and take over the site.

The Salon Booking System WordPress plugin before 10.31.11 does not restrict which user account its salon staff roles may edit through the customers management screen, allowing users with the Salon Staff or Salon Worker role to reset any other user's role, including administrators, to a customer and to overwrite arbitrary profile fields on any account, leading to loss of administrative access and potential site lockout.

The Salon Booking System WordPress plugin before 10.31.11 does not validate a user-supplied image URL before fetching it server-side and writing the response to a publicly accessible location under an attacker-chosen filename, allowing users with the Salon Staff role or higher to force the server to read internal-only resources and disclose them, and to store a malicious SVG that runs arbitrary scripts in the site's origin for anyone who opens it.

The Salon Booking System WordPress plugin before 10.31.11 does not restrict one of its REST API endpoints to salon staff, allowing any authenticated user, such as a subscriber, to retrieve every discount coupon configured on the site, including coupons the administrator has chosen to hide from customers, together with their amounts, validity dates and usage limits.

The Salon Booking System WordPress plugin before 10.31.3 does not restrict several of its booking REST API routes to users with the appropriate capability, allowing any authenticated user such as a subscriber to read every customer's booking records, including their personal data.

The Salon Booking System WordPress plugin before 10.31.9 does not generate its booking-API access tokens from a secure random source, instead deriving them from a value hardcoded in the Salon Booking System WordPress plugin before 10.31.9 and the second at which a token was issued. An attacker able to constrain when a staff or administrator token was issued can compute a valid token and access the booking API as that user, including an administrator.

The Salon Booking System WordPress plugin before 10.31.9 does not properly check authorization before creating a booking and trusts a caller-supplied user identifier and booking status, allowing unauthenticated attackers to create bookings attributed to arbitrary users, overwrite those users' stored contact details, and mark bookings as paid or confirmed without any payment.

The Salon Booking System WordPress plugin before 10.31.9 does not correctly verify the authenticity of REST API requests and discards WordPress core's nonce check for cookie-authenticated sessions across the whole REST API, allowing unauthenticated attackers who trick a logged-in administrator into clicking a crafted link to forge requests in that administrator's browser, up to creating a new administrator account.

The Salon Booking System – Appointment Booking for Salons, Barbershops & Spas plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sln[<checkout-field-key>]' parameter in all versions up to, and including, 10.31.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that the site administrator has configured at least one custom checkout field of type Html or File, which is a standard documented plugin feature.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Reflected XSS.This issue affects Salon booking system: from n/a through 10.31.5.

Unauthenticated Privilege Escalation in Salon booking system <= 10.31.7 versions.

Missing Authorization vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Salon booking system: from n/a through 10.31.9.

Unauthenticated Broken Authentication in Salon booking system <= 10.30.26 versions.

The Salon Booking System WordPress plugin through 10.31.0 does not verify that a requested booking belongs to the caller on one of its REST API endpoints, requiring only a basic read capability, allowing any authenticated user (including a Subscriber or self-registered customer account) to disclose any customer's booking personal data such as name, email, phone number, address and private notes by enumerating booking identifiers.

The Salon Booking System WordPress plugin before 10.30.34 does not properly restrict access to some of its booking-modification AJAX actions and does not verify ownership of the targeted booking, allowing unauthenticated users to tamper with the stored total of arbitrary bookings.

The Salon Booking System WordPress plugin before 10.30.34 does not properly validate a booking's ownership token before loading it in its booking-wizard confirmation steps, allowing unauthenticated attackers to disclose other customers' booking records, including personal information, by supplying a sequential booking identifier.

The Salon Booking System WordPress plugin through 10.30.33 does not perform any capability check or validate an OAuth state value on its Google Calendar authorization callback, which is also hooked for unauthenticated users, allowing an unauthenticated attacker to overwrite the site's stored Google Calendar connection tokens with attacker-controlled ones and hijack the integration. Exploitation requires the site to have configured its own Google OAuth client for the calendar feature.

The Salon Booking System – Free Version plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 10.30.32. This is due to missing or incorrect nonce validation on the setCustomText function. This makes it possible for unauthenticated attackers to inject arbitrary PHP code into the web-accessible translate-constants.php file within the plugin directory, enabling remote code execution on the server via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. sanitize_text_field() is applied to the POST 'value' parameter but does not neutralize the characters — single quotes, parentheses, semicolons, $, and [] — required to break out of the PHP string literal into which the value is interpolated before being written to disk via file_put_contents().

The Salon Booking System WordPress plugin before 10.30.20 does not have proper authorisation checks on one of its AJAX actions, allowing any authenticated user, such as a subscriber, to modify a Salon Booking System WordPress plugin before 10.30.20 setting and bypass the manual approval of new bookings.

Unauthenticated Insecure Direct Object References (IDOR) in Salon booking system <= 10.30.24 versions.

Unauthenticated Broken Access Control in Salon booking system <= 10.30.25 versions.

The Salon Booking System – Free Version plugin for WordPress is vulnerable to Arbitrary File Read in versions up to, and including, 10.30.25. This is due to the public booking flow accepting attacker-controlled file-field values and later using those stored values as trusted paths for email attachments. This makes it possible for unauthenticated attackers to read arbitrary local files and exfiltrate them via booking confirmation email attachments.

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Retrieve Embedded Sensitive Data.This issue affects Salon booking system: from n/a through <= 10.30.3.

Cross-Site Request Forgery (CSRF) vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Cross Site Request Forgery.This issue affects Salon booking system: from n/a through <= 10.30.3.

The Salon Booking System, Appointment Scheduling for Salons, Spas & Small Businesses plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ajax function in all versions up to, and including, 10.22. This makes it possible for unauthenticated attackers to execute AJAX actions, including limited file uploads.

Cross-Site Request Forgery (CSRF) vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Cross Site Request Forgery.This issue affects Salon booking system: from n/a through <= 10.16.

Missing Authorization vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Salon booking system: from n/a through 10.31.9.

Incorrect Privilege Assignment vulnerability in Dimitri Grassi Salon booking system salon-booking-system allows Privilege Escalation.This issue affects Salon booking system: from n/a through < 10.15.

Authorization Bypass Through User-Controlled Key vulnerability in Dimitri Grassi Salon booking system salon-booking-system.This issue affects Salon booking system: from n/a through <= 10.9.