Smart Appointment & Booking <= 1.0.8 - Missing Authorization to Unauthenticated Arbitrary Booking Cancellation
| CVE | CVE-2026-5693 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | May 11, 2026 |
| Last Updated | June 10, 2026 |
| Researcher |
Itthidej Aramsri (Boeing777)
|
Description
The Smart Appointment & Booking plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and a nonce validation logic flaw in the saab_cancel_booking() function in all versions up to, and including, 1.0.8. The nonce check uses && (AND) instead of || (OR), which means providing any value for the security parameter causes the entire check to be skipped. This makes it possible for unauthenticated attackers to cancel arbitrary bookings by supplying a predictable booking ID.
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Vulnerability Details for Smart Appointment & Booking
| Software Type | Plugin |
|---|---|
| Software Slug | smart-appointment-booking (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.0.0, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Smart Appointment & Booking
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Smart Appointment & Booking <= 1.0.7 - Authenticated (Subscriber+) Stored Cross-Site Scripting via saab_save_form_data AJAX Action | CVE-2026-0742 | Athiwat Tiprasaharn (Jitlada), Itthidej Aramsri (Boeing777) | February 3, 2026 |
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