CVE-2026-5693

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/afc3531d-6134-4b45-b532-37430d96a8fb?source=cve

https://wordpress.org/plugins/smart-appointment-booking/

https://plugins.trac.wordpress.org/browser/smart-appointment-booking/trunk/inc/front/class.saab.front.action.php#L2558

https://plugins.trac.wordpress.org/browser/smart-appointment-booking/tags/1.0.8/inc/front/class.saab.front.action.php#L2558

Details

Source: Mitre, NVD

Published: 2026-05-12

Updated: 2026-05-12

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00026