Bookly <= 20.3 - Staff Member Stored Cross-Site Scripting

5.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-24930
CVSS 5.4 (Medium)
Publicly Published November 8, 2021
Last Updated January 22, 2024
Researcher Mesut Cetin

Description

The WordPress Online Booking and Scheduling Plugin WordPress plugin before 20.3.1 does not escape the Staff Full Name field before outputting it back in a page, which could lead to a Stored Cross-Site Scripting issue

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 20.3.1, or a newer patched version
Affected Version
  • <= 20.3
Patched Version
  • 20.3.1

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 – Bookly <= 27.7 - Unauthenticated SQL Injection CVE-2026-61949 7.5 dodoh4t July 16, 2026
3 Online Scheduling and Appointment Booking System – Bookly <= 27.7 - Unauthenticated Stored Cross-Site Scripting CVE-2026-61944 7.2 ickogz July 16, 2026
4 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
5 Online Scheduling and Appointment Booking System – Bookly <= 27.4 - Unauthenticated Information Exposure CVE-2026-42667 5.3 Tiago Ventura (perses) May 10, 2026
6 Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips' CVE-2026-2519 5.3 Youssef Elouaer April 8, 2026
7 Online Scheduling and Appointment Booking System – Bookly <= 26.7 - Reflected Cross-Site Scripting CVE-2026-32540 6.1 ickogz March 20, 2026
8 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
9 WordPress Online Booking and Scheduling Plugin – Bookly <= 22.4.1 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2023-5209 4.4 Sławomir Zakrzewski, Maksymilian Kubiak November 6, 2023
10 Bookly <= 22.3.1 - Authenticated(Administrator+) SQL Injection CVE-2023-4691 6.6 Pablo Sanchez September 25, 2023

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