Appointment Booking Calendar <= 1.3.82 - Cross-Site Request Forgery

5.4
Cross-Site Request Forgery (CSRF)
CVE CVE-2024-0856
CVSS 5.4 (Medium)
Publicly Published February 28, 2024
Last Updated April 24, 2024
Researcher Sushil Phuyal

Description

The Appointment Booking Calendar plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.3.82. This is due to missing or incorrect nonce validation on the cpabc_appointments.php page. This makes it possible for unauthenticated attackers to perform actions like adding bookings without paying via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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Vulnerability Details for Appointment Booking Calendar

Software Type Plugin
Software Slug appointment-booking-calendar (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.3.83, or a newer patched version
Affected Version
  • <= 1.3.82
Patched Version
  • 1.3.83

Recent vulnerabilities in Appointment Booking Calendar

# Title CVE ID CVSS Researchers Date
1 Appointment Booking Calendar <= 1.4.02 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Disclosure CVE-2026-12113 4.3 Wordfence PRISM June 30, 2026
2 Appointment Booking Calendar <= 1.4.01 - Authenticated (Contributor+) Sensitive Information Exposure via 'id' Parameter CVE-2026-12111 4.3 Chloe Chamberland, Wordfence PRISM June 17, 2026
3 Appointment Booking Calendar <= 1.3.96 - Missing Authorization to Arbitrary Booking Confirmation via 'cpabc_ipncheck' Parameter CVE-2025-13317 5.3 Md. Moniruzzaman Prodhan (NomanProdhan) November 21, 2025
4 Appointment Booking Calendar <= 1.3.95 - Missing Authorization CVE-2025-64261 4.3 daroo November 15, 2025
5 Appointment Booking Calendar <= 1.3.92 - Missing Authorization CVE-2025-46247 5.3 timomangcut April 22, 2025
6 Appointment Booking Calendar <= 1.3.92 - Cross-Site Request Forgery to SQL Injection CVE-2025-46241 6.5 astra.r3verii April 22, 2025
7 Appointment Booking Calendar <= 1.3.69 - Missing Authorization CVE-2022-43482 4.3 István Márton October 30, 2022
8 Appointment Booking Calendar <= 1.3.34 - Stored Cross-Site Scripting CVE-2020-9371 4.8 March 4, 2020
9 Appointment Booking Calendar <= 1.3.34 - CSV Injection CVE-2020-9372 7.8 Daniel Monzón March 4, 2020
10 Appointment Booking Calendar < 1.3.19 - Cross-Site Scripting CVE-2019-14791 6.1 July 4, 2019

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