Simply Schedule Appointments vulnerabilities

3 known vulnerabilities in Simply Schedule Appointments from NSquared. 3 are rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 7.1 High severity

  Simply Schedule Appointments: Improper Neutralization of Input During Web Page Generation

  CVE-2026-110382Oct 18, 2026NSquared

  Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Stored XSS.This issue affects Simply Schedule Appointments: from n/a through 1.6.12.

• 8.5 High severity

  Simply Schedule Appointments: Improper Neutralization of Special Elements used in an SQL Command

  CVE-2026-39495Apr 8, 2026NSquared

  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 throug

• 8.8 High severity

  Appointment Booking Calendar — Simply Schedule…: Improper Neutralization of Special Elements used in an SQL Command

  CVE-2024-2342Apr 9, 2024Croixhaug

  The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the customer_id parameter in all versions up to, and including, 1.6.7.7 due to insufficient escaping on the user supplied par