Unauthenticated Cross-Site Scripting Vulnerability in Simply Schedule Appointments by Simply Schedule
CVE-2026-39447

7.1HIGH

Key Information:

Vendor

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

What is CVE-2026-39447?

The Simply Schedule Appointments plugin for WordPress, specifically in versions up to and including 1.6.10.6, is susceptible to an unauthenticated Cross-Site Scripting (XSS) vulnerability. This flaw can allow attackers to inject malicious scripts into web pages viewed by other users, potentially compromising their session and exposing sensitive data. It is critical for users of affected versions to update their installations promptly to mitigate this security risk.

Affected Version(s)

Simply Schedule Appointments <= 1.6.10.6

References

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

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

devploit | Patchstack Bug Bounty Program
.