CVE-2026-17021

Deferred Deferred - Pending Action

Unauthenticated Booking Total Modification in Salon Booking System

Publication date: 2026-08-10

Last updated on: 2026-08-26

Assigner: WPScan

Description

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-10

Last Modified

2026-08-26

Generated

2026-08-30

AI Q&A

2026-08-10

EPSS Evaluated

2026-08-29

NVD

CVE-2026-17021

EUVD

EUVD-2026-55006

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

The Salon Booking System WordPress plugin up to version 10.30.33 has a vulnerability where unauthenticated users can modify booking totals without proper access restrictions or ownership verification. This is due to insecure AJAX actions that fail to validate user permissions or booking ownership before allowing changes.

Detection Guidance

Check if the Salon Booking System plugin version is 10.30.33 or lower. Look for unauthorized changes in booking totals or suspicious AJAX requests to booking-modification endpoints.

Impact Analysis

An attacker could tamper with booking totals, leading to incorrect financial records, disputes with customers, or potential fraud. This could disrupt business operations and damage trust in the booking system.

Compliance Impact

This vulnerability may impact compliance by allowing unauthorized modifications to financial or personal data, violating integrity and access control requirements in GDPR and HIPAA. It could lead to data breaches or inaccurate records, risking regulatory penalties.

Mitigation Strategies

Update the Salon Booking System plugin to the latest version immediately. Review booking totals for unauthorized changes and restrict access to AJAX booking-modification actions.

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