CVE-2026-39495 HIGH

CVE-2026-39495: WordPress Simply Schedule Appointments plugin <= 1.6.9.27 - SQL Injection vulnerability

Vendor Nsquared
Product Simply Schedule Appointments
Weakness CWE-89 · SQLi
Published April 8, 2026
Last update April 29, 2026

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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 NSquared Simply Schedule Appointments simply-schedule-appointments allows Blind SQL Injection.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.9.27.

Explanation of Vulnerability in Simple Terms

02Summary

Simply Schedule Appointments versions up to 1.6.9.27 contain a SQL injection vulnerability in database query handling. An authenticated user with low privileges can craft malicious input to extract sensitive data from the database or disrupt service availability. The vulnerability affects the entire application scope due to database access.

What an attacker can do

03Attacker Capabilities

Read sensitive data from the database or cause the site to become unavailable.

Potential impact on your site

04Site Impact

Unauthorized access to appointment data, customer information, or other database records; potential service disruption.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account on the site.

Key dates

06Disclosure timeline

April 8, 2026 CVE published
April 29, 2026 Record updated

Related vulnerabilities

08Related CVE