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    CVE-2026-110381

    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.

    Published:Oct 15, 2026
    Last Modified:Oct 24, 2026
    EPS:Oct 15, 2026
    EPSS Score:0.00201
    CVSS Score:6.3

    Affected Products

    Vendor
    Nsquared
    Product
    Simply Schedule Appointments
    Vendor
    Wordpress-extensions
    Product
    Simply Schedule Appointments

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-110382 (CVSS 7.1) — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NSquared…
    CVE-2026-84764 (CVSS 8.8) — Unauthenticated Cross Site Request Forgery (CSRF) in Simply Schedule Appointments <= 1.6.12.23 versions.…
    CVE-2026-65513 (CVSS 7.1) — Unauthenticated Cross Site Scripting (XSS) in Simply Schedule Appointments <= 1.6.12.10 versions.…
    CVE-2026-65508 (CVSS 9.3) — Unauthenticated SQL Injection in Simply Schedule Appointments <= 1.6.12.10 versions.…
    CVE-2026-13400 (CVSS 6.1) — Simply Schedule Appointments is vulnerable to unauthenticated Stored Cross-Site Scripting in all versions up t…
    CVE-2026-59523 (CVSS 6.5) — Missing Authorization vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allo…
    CVE-2026-57812 (CVSS 6.5) — Missing Authorization vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allo…
    CVE-2026-57317 (CVSS 7.1) — Unauthenticated Cross Site Scripting (XSS) in Simply Schedule Appointments <= 1.6.12.2 versions.…
    CVE-2026-42384 (CVSS 7.5) — Unauthenticated Sensitive Data Exposure in Simply Schedule Appointments < 1.6.11.2 versions.…
    CVE-2026-39493 (CVSS 9.3) — Unauthenticated SQL Injection in Simply Schedule Appointments <= 1.6.9.27 versions.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High