CVE-2026-5693
Smart Appointment & Booking <= 1.0.8 - Missing Authorization to Unauthenticated Arbitrary Booking Cancellation
- State
- Published
- Severity
- 5.3 Medium
- Published
- May 12, 2026
- Updated
- May 12, 2026
- Reserved
- Apr 6, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | Wordfence |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
Smart Appointment & Bookingzealopensource |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/afc3531d-6134-4b45-b532-37430d96a8fb?source=cve
- 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
- https://wordpress.org/plugins/smart-appointment-booking/
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