Access Control Flaw in NSquared Simply Schedule Appointments Plugin
CVE-2026-59523

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Simply Schedule Appointments
Vendor
CVE Published:
13 July 2026

What is CVE-2026-59523?

The Simply Schedule Appointments plugin by NSquared suffers from a missing authorization vulnerability, allowing attackers to exploit incorrectly configured access control security levels. This issue affects versions up to 1.6.11.11, potentially enabling unauthorized access to sensitive functionalities within the application.

Affected Version(s)

Simply Schedule Appointments 0 <= 1.6.11.11

References

https://patchstack.com/database/Wordpress/Plugin/simply-s...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

anhcd05 | Patchstack Bug Bounty Program
.