What the vulnerability does
01Description
Missing Authorization vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.10.2.
Explanation of Vulnerability in Simple Terms
02Summary
Simply Schedule Appointments versions 1.6.10.2 and earlier lack proper authorization checks, allowing unauthenticated attackers to modify appointment data over the network. The vulnerability does not expose sensitive information or disrupt service availability, but attackers can alter scheduling records without authentication or user interaction.
What an attacker can do
03Attacker Capabilities
Modify appointment data without logging in or user interaction.
Potential impact on your site
04Site Impact
Appointment records can be altered by anyone, potentially disrupting scheduling and customer trust.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user action required.
Key dates
06Disclosure timeline
April 8, 2026
CVE published
April 29, 2026
Record updated