What’s Vulnerable › Vulnerabilities

CVE-2023-50851: WordPress Simply Schedule Appointments Plugin < 1.6.6.1 is vulnerable to SQL Injection

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-28 · updated 2026-06-17
• Weakness: CWE-89

Description

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in N Squared Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin.This issue affects Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin: from n/a before 1.6.6.1.

Affected products

• Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin: before 1.6.6.1 — fixed in 1.6.6.1

How to fix

Upgrade to a fixed version: Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin 1.6.6.1. Check the vendor advisory for mitigations.

References

• https://patchstack.com/database/vulnerability/simply-schedule-appointments/wordpress-simply-schedule-appointments-booking-plugin-1-6-6-1-sql-injection-vulnerability?_s_id=cve
• https://patchstack.com/database/vulnerability/simply-schedule-appointments/wordpress-simply-schedule-appointments-booking-plugin-1-6-6-1-sql-injection-vulnerability?_s_id=cve

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