CVE-2023-50851 HIGH

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

Vendor N Squared
Product Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
Weakness CWE-89 · SQLi
Published December 28, 2023
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

7.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

The Simply Schedule Appointments Booking plugin for WordPress contains a SQL injection vulnerability in versions before 1.6.6.1. An authenticated administrator can craft malicious input that executes arbitrary SQL queries against the site database. This allows reading or modifying sensitive data, though the attacker must have high-level admin privileges to exploit it.

What an attacker can do

03Attacker Capabilities

Read or modify database contents via SQL injection.

Potential impact on your site

04Site Impact

A rogue admin can extract or alter booking data, user information, or other database records.

Conditions required to exploit

05Prerequisites

Administrator account access; no user interaction required.

Key dates

06Disclosure timeline

December 28, 2023 CVE published
April 28, 2026 Record updated