CVE-2026-39447
Deferred Deferred - Pending Action
Unauthenticated XSS in Simply Schedule Appointments

Publication date: 2026-06-15

Last updated on: 2026-06-15

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in Simply Schedule Appointments <= 1.6.10.6 versions.
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Meta Information
Published
2026-06-15
Last Modified
2026-06-15
Generated
2026-06-16
AI Q&A
2026-06-16
EPSS Evaluated
N/A
NVD
CVE-2026-39447
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
simply_schedule_appointments simply_schedule_appointments to 1.6.10.6 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is an unauthenticated Cross Site Scripting (XSS) issue found in Simply Schedule Appointments versions up to and including 1.6.10.6.

Cross Site Scripting (XSS) allows attackers to inject malicious scripts into web pages viewed by other users. Being unauthenticated means the attacker does not need to log in or have any privileges to exploit this vulnerability.

Impact Analysis

Exploitation of this vulnerability can lead to several impacts including the ability for attackers to execute malicious scripts in the context of the affected website.

  • Compromise of user data confidentiality (C:L)
  • Integrity of data can be affected (I:L)
  • Availability of the application may be impacted (A:L)

Since the vulnerability is exploitable remotely without authentication, it poses a significant risk to users and the application.

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