BookIt <= 2.3.7 - Authentication Bypass

9.8
Authentication Bypass Using an Alternate Path or Channel
CVE CVE-2023-2834
CVSS 9.8 (Critical)
Publicly Published June 20, 2023
Last Updated January 22, 2024
Researcher István Márton - Wordfence

Description

The BookIt plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.3.7. This is due to insufficient verification on the user being supplied during booking an appointment through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the email.

Learn more about Authentication Bypass vulnerabilities and how to prevent them.

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Vulnerability Details for Bookit — Booking & Appointment Calendar

Software Type Plugin
Software Slug bookit (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.3.8, or a newer patched version
Affected Version
  • <= 2.3.7
Patched Version
  • 2.3.8

Recent vulnerabilities in Bookit — Booking & Appointment Calendar

# Title CVE ID CVSS Researchers Date
1 Bookit — Booking & Appointment Calendar <= 2.5.1 - Missing Authorization CVE-2026-40780 5.3 davidfdzmorilla April 22, 2026
2 Bookit <= 2.5.0 - Missing Authorization to Unauthenticated Settings Update CVE-2025-12841 5.3 Khaled Alenazi (Nxploited) November 15, 2025
3 Booking Calendar | Appointment Booking | Bookit <= 2.5.0 - Missing Authorization to Unauthenticated Stripe Connection CVE-2025-12633 7.5 Md. Moniruzzaman Prodhan (NomanProdhan) November 11, 2025
4 BookIt <=2.4.0 - Price Bypass CVE-2024-24715 4.9 Debangshu Kundu, Arpeet Rathi January 31, 2024
5 BookIt <= 2.4.3 - Authenticated(Administrator+) SQL Injection CVE-2023-50852 6.6 Muhammad Daffa December 21, 2023
6 Freemius SDK <= 2.5.9 - Reflected Cross-Site Scripting via fs_request_get CVE-2023-33999 6.1 Rafie Muhammad July 18, 2023
7 Freemius SDK <= 2.4.2 - Missing Authorization Checks CVE-2022-4974 6.3 March 4, 2022

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