WP BASE Booking of Appointments, Services and Events <= 6.3.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-73402
CVSS 6.4 (Medium)
Publicly Published August 20, 2026
Last Updated August 24, 2026
Researcher moonge

Description

The WP BASE Booking of Appointments, Services and Events plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 6.3.2. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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

References

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Vulnerability Details for WP BASE Booking of Appointments, Services and Events

Software Type Plugin
Software Slug wp-base-booking-of-appointments-services-and-events (view on wordpress.org)
Patched? Yes
Remediation Update to version 6.4.0, or a newer patched version
Affected Version
  • <= 6.3.2
Patched Version
  • 6.4.0

Recent vulnerabilities in WP BASE Booking of Appointments, Services and Events

# Title CVE ID CVSS Researchers Date
1 WP BASE Booking of Appointments, Services and Events <= 6.4.0 - Authenticated (Subscriber+) SQL Injection CVE-2026-103066 6.5 Khanh Nguyen October 3, 2026
2 WP BASE Booking of Appointments, Services and Events <= 6.4.0 - Unauthenticated SQL Injection CVE-2026-103352 7.5 Khanh Nguyen October 3, 2026
3 WP BASE Booking of Appointments, Services and Events <= 6.3.0 - Unauthenticated Remote Code Execution CVE-2026-61962 9.8 buitu August 11, 2026
4 WP BASE Booking of Appointments, Services and Events <= 6.3.1 - Authenticated (Subscriber+) Privilege Escalation CVE-2026-59541 9.8 Afan July 22, 2026
5 WP BASE Booking of Appointments, Services and Events <= 5.9.0 - Unauthenticated Privilege Escalation CVE-2026-39587 9.8 Jarno Vos (jarnovos) April 8, 2026
6 WP BASE Booking of Appointments, Services and Events <= 4.9.2 - Reflected Cross-Site Scripting CVE-2024-12737 6.1 Hassan Khan Yusufzai - Splint3r7 February 5, 2025
7 WP BASE Booking <= 5.0.0 - Unauthenticated Stored Cross-Site Scripting CVE-2025-22684 7.2 Abdi Pranata January 31, 2025
8 WP BASE Booking of Appointments, Services and Events <= 4.9.2 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via app_export_db CVE-2024-12558 6.5 Thanh Nam Tran December 20, 2024
9 WP BASE Booking of Appointments, Services and Events <= 4.9.1 - Reflected Cross-Site Scripting via status Parameter CVE-2024-12469 6.1 vgo0 December 16, 2024

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