CVE-2026-39495: Nsquared Simply Schedule Appointments

High severity, CVSS 8.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Blind SQL Injection.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.9.27.

Affected products

• Nsquared Simply Schedule Appointments: up to and including 1.6.9.27

Published 2026-04-08. Last modified 2026-07-24.