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Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin — Vulnerabilities & Security Advisories 18

All 18 CVE vulnerabilities found in Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin, with AI-generated Chinese analysis, references, and POCs.

Vendor: N Squared

CVE IDTitleCVSSSeverityPublished
CVE-2026-3658 Appointment Booking Calendar <= 1.6.10.0 - Unauthenticated SQL Injection via 'fields' Parameter CWE-89 7.5 High2026-03-19
CVE-2026-1704 Appointment Booking Calendar <= 1.6.9.29 - Insecure Direct Object Reference to Authenticated (Staff+) Sensitive Information Exposure CWE-639 4.3 Medium2026-03-13
CVE-2026-3045 Appointment Booking Calendar <= 1.6.9.29 - Missing Authorization to Unauthenticated Sensitive Information Exposure via Settings REST API Endpoint CWE-862 7.5 High2026-03-13
CVE-2026-1708 Appointment Booking Calendar <= 1.6.9.27 - Unauthenticated SQL Injection via 'append_where_sql' Parameter CWE-89 7.5 High2026-03-11
CVE-2025-12166 Simply Schedule Appointments <= 1.6.9.9 - Unauthenticated SQL Injection via `order` and `append_where_sql` Parameters CWE-89 7.5 High2026-01-14
CVE-2025-11723 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.9.5 - Unauthenticated Sensitive Information Exposure CWE-330 6.5 Medium2026-01-06
CVE-2025-13754 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.9.16 - Missing Authorization to Unauthenticated Sensitive Information Exposure CWE-862 5.3 Medium2025-12-19
CVE-2025-4667 Simply Schedule Appointments <= 1.6.8.30 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Shortcodes CWE-79 6.4 Medium2025-06-14
CVE-2025-1119 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.8.5 - Unauthenticated Arbitrary Shortcode Execution CWE-94 7.3 High2025-03-13
CVE-2024-13431 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.8.3 - Reflected Cross-Site Scripting CWE-79 6.1 Medium2025-03-07
CVE-2024-7877 Appointment Booking Calendar < 1.6.7.55 - Admin+ Stored XSS 4.8AIMediumAI2024-11-05
CVE-2024-7876 Appointment Booking Calendar < 1.6.7.55 - Admin+ Stored XSS 4.8AIMediumAI2024-11-05
CVE-2024-7129 Appointment Booking Calendar < 1.6.7.43 - Admin+ Template Injection to RCE 7.2AIHighAI2024-09-13
CVE-2024-4288 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.7.14 - Authenticated (Contributor+) Stored Cross-Site Scripting CWE-79 6.4 Medium2024-05-16
CVE-2024-2341 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.7.7 - Authenticated (Subscriber+) SQL Injection CWE-89 8.8 High2024-04-09
CVE-2024-2342 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.7.7 - Authenticated (Contributor+) SQL Injection via Shortcode CWE-89 8.8 High2024-04-09
CVE-2024-1760 Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.6.20 - Cross-Site Request Forgery to Plugin Data Reset CWE-352 4.3 Medium2024-03-06
CVE-2023-50851 WordPress Simply Schedule Appointments Plugin < 1.6.6.1 is vulnerable to SQL Injection CWE-89 7.6 High2023-12-28

All 18 known CVE vulnerabilities affecting Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin with full Chinese analysis, references, and POCs where available.