WordPress Online Booking and Scheduling Plugin – Bookly <= 22.4.1 - Authenticated (Admin+) Stored Cross-Site Scripting

4.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-5209
CVSS 4.4 (Medium)
Publicly Published November 6, 2023
Last Updated January 22, 2024
Researchers Sławomir Zakrzewski
Maksymilian Kubiak

Description

The WordPress Online Booking and Scheduling Plugin – Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 22.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

References

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Vulnerability Details for Online Scheduling and Appointment Booking System – Bookly

Software Type Plugin
Software Slug bookly-responsive-appointment-booking-tool (view on wordpress.org)
Patched? Yes
Remediation Update to version 22.5, or a newer patched version
Affected Version
  • <= 22.4.1
Patched Version
  • 22.5

Recent vulnerabilities in Online Scheduling and Appointment Booking System – Bookly

# Title CVE ID CVSS Researchers Date
1 Online Scheduling and Appointment Booking System – Bookly < 27.8 - Unauthenticated SQL Injection CVE-2026-13395 7.5 Jakub Herman August 3, 2026
2 Online Scheduling and Appointment Booking System <= 27.5 - Unauthenticated SQL Injection CVE-2026-14516 7.5 Nguyen Ngoc Duc (duc193) July 27, 2026
3 Online Scheduling and Appointment Booking System – Bookly <= 27.7 - Unauthenticated SQL Injection CVE-2026-61949 7.5 dodoh4t July 16, 2026
4 Online Scheduling and Appointment Booking System – Bookly <= 27.7 - Unauthenticated Stored Cross-Site Scripting CVE-2026-61944 7.2 ickogz July 16, 2026
5 Online Scheduling and Appointment Booking System – Bookly <= 27.2 - Unauthenticated Stored Cross-Site Scripting via 'bookly-customer-full-name' Cookie CVE-2026-5513 7.2 Naoya Takahashi (nakko) June 12, 2026
6 Online Scheduling and Appointment Booking System – Bookly <= 27.4 - Unauthenticated Information Exposure CVE-2026-42667 5.3 Tiago Ventura (perses) May 10, 2026
7 Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips' CVE-2026-2519 5.3 Youssef Elouaer April 8, 2026
8 Online Scheduling and Appointment Booking System – Bookly <= 26.7 - Reflected Cross-Site Scripting CVE-2026-32540 6.1 ickogz March 20, 2026
9 WordPress Online Booking and Scheduling Plugin – Bookly <= 23.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Color Profile Parameter CVE-2024-5584 6.4 0xBishop June 10, 2024
10 Bookly <= 22.3.1 - Authenticated(Administrator+) SQL Injection CVE-2023-4691 6.6 Pablo Sanchez September 25, 2023

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