---
id: CVE-2026-110381
title: >-
  Authorization Bypass Through User-Controlled Key vulnerability in NSquared
  Simply Schedule Appointments simply-schedule-appointments allows Exploiting
  Incorrectly Configured Access Control Security Levels.This issue affects
  Simply Schedu…
summary: >-
  Authorization Bypass Through User-Controlled Key vulnerability in NSquared
  Simply Schedule Appointments simply-schedule-appointments allows Exploiting
  Incorrectly Configured Access Control Security Levels.This issue affects
  Simply Schedu…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-639
vendor: NSquared
product: simply-schedule-appointments
affected:
  - simply-schedule-appointments <= 1.6.12.35
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T18:17:26.023'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110381'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-12-35-insecure-direct-object-references-idor-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-15T18:23:58.446Z'
---

## Overview

Authorization Bypass Through User-Controlled Key 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 1.6.12.35.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.