# CVE-2026-110031: The Salon Booking System plugin privilege escalation

Source: https://junglewise.ai/threats/cve-2026-110031-the-salon-booking-system-wordpress-plugin-before-10-31-11-does  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-18. Updated: 2026-10-18  
License: CC BY 4.0 with a link back

CVE-2026-110031 · Severity: info · Published 2026-10-18

The Salon Booking System is a WordPress plugin that manages appointments and customer data for salon businesses. Users with the built-in salon staff role can exploit a flaw to assign administrator privileges to any account, gaining complete control over the entire website. An attacker with salon staff access can impersonate the site owner and modify or steal sensitive business data.

Technologies: [Salon Booking System](https://junglewise.ai/threats/technologies/salon-booking-system). Vendors: [Salon Booking System](https://junglewise.ai/threats/vendors/salon-booking-system).

## Quick answers

**Is CVE-2026-110031 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-110031 being exploited in the wild.

**How severe is CVE-2026-110031?** Informational severity, published 18 October 2026.

**Which products and versions are affected?** Salon Booking System 10.17 through 10.31.10.

**Is there a fix for CVE-2026-110031?** Yes: fixed in 10.31.11. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-110031 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-110031?** Check whether you run Salon Booking System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 10.31.11

## Technical details

The plugin fails to properly validate user capabilities when salon staff edit customer accounts, allowing assignment of arbitrary capabilities including administrator roles. This is a privilege escalation vulnerability affecting versions 10.17 through 10.31.10, exploitable by any authenticated user holding the custom salon staff role via customer editing functionality. The vulnerability stems from case-insensitive handling of user meta keys that bypass authorization checks.

## Affected products

- Salon Booking System Salon Booking System 10.17 through 10.31.10

## Timeline

- 2026-10-16: disclosed
- 2026-10-18: advisory

## References

- [https://wpscan.com/vulnerability/8d24ad5b-2d50-467b-9c40-45e86e53dafb/](https://wpscan.com/vulnerability/8d24ad5b-2d50-467b-9c40-45e86e53dafb/)

## Related threats

- [The Salon Booking System missing authorization in REST API endpoint](https://junglewise.ai/threats/cve-2026-110035-the-salon-booking-system-wordpress-plugin-before-10-31-11-does)
- [Salon Booking System WordPress plugin SSRF and stored XSS in image URL](https://junglewise.ai/threats/cve-2026-110033-the-salon-booking-system-wordpress-plugin-before-10-31-11-does)
- [The Salon Booking System WordPress plugin insufficient access control in customer editor](https://junglewise.ai/threats/cve-2026-110032-the-salon-booking-system-wordpress-plugin-before-10-31-11-does)
- [Salon Booking System WordPress plugin CSRF in REST API](https://junglewise.ai/threats/cve-2026-110015-the-salon-booking-system-wordpress-plugin-before-10-31-9-does)
- [Salon Booking System WordPress plugin insecure token generation](https://junglewise.ai/threats/cve-2026-110013-the-salon-booking-system-wordpress-plugin-before-10-31-9-does)