Smart Appointment & Booking: A security weakness
Smart Appointment & Booking is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 1.0.8.
- Component
- Smart Appointment & Booking
- Plugin slug
smart-appointment-booking- Affected
- <= 1.0.8
- Safe version
> 1.0.8- Published
- May 12, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published May 12, 2026 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
Update Smart Appointment & Booking to a release after 1.0.8, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N