Name: CVE-2026-5693: Missing Authorization
Creator: Rapid7
Published: 2026-05-12T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-5693, CWE-862, CVSS 5.3, EPSS 0.00026

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.

CVSS Details

CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Smart Appointment Booking Plugin	—	Update smart-appointment-booking plugin to version 2.0.0, or a newer patched version	Jun 12, 2026	May 11, 2026

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CVSS Details

Covered by Rapid7

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