Unauthenticated SQL Injection in Simply Schedule Appointments by Simply Schedule
CVE-2026-39493

9.3CRITICAL

Key Information:

Vendor

WordPress
Status
Simply Schedule Appointments
Vendor
CVE Published:
15 June 2026

What is CVE-2026-39493?

The Simply Schedule Appointments plugin for WordPress is susceptible to an unauthenticated SQL injection vulnerability. This flaw resides in versions up to 1.6.9.27, allowing attackers to execute arbitrary SQL queries, potentially leading to unauthorized access to sensitive data. Website owners using affected versions are strongly advised to update immediately to mitigate the risk of exploitation.

Affected Version(s)

Simply Schedule Appointments <= 1.6.9.27

References

https://patchstack.com/database/wordpress/plugin/simply-s...
vdb-entry

CVSS V3.1

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Doan Dinh Van | Patchstack Bug Bounty Program
.