TrueBooker <= 1.2.2 - Unauthenticated SQL Injection

7.5
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE CVE-2026-13161
CVSS 7.5 (High)
Publicly Published July 27, 2026
Last Updated July 28, 2026
Researcher Karan J

Description

The TrueBooker – Appointment Booking and Scheduler System plugin for WordPress is vulnerable to generic SQL Injection via the 'alldata[truebooker_user]' parameter in all versions up to, and including, 1.2.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The check_ajax_referer() nonce guard does not constitute an authentication or authorization barrier because the nonce is exposed to unauthenticated visitors on TrueBooker front-end booking pages; exploitation additionally requires that the required booking fields (category, service, person, date, and time slot) be present in the alldata POST parameter so that execution reaches the vulnerable SQL query branch.

Learn more about SQL Injection vulnerabilities and how to prevent them.

References

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Vulnerability Details for TrueBooker – Appointment Booking and Scheduler System

Software Type Plugin
Software Slug truebooker-appointment-booking (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.2.3, or a newer patched version
Affected Version
  • <= 1.2.2
Patched Version
  • 1.2.3

Recent vulnerabilities in TrueBooker – Appointment Booking and Scheduler System

# Title CVE ID CVSS Researchers Date
1 TrueBooker – Appointment Booking and Scheduler System < 1.2.7 - Missing Authorization CVE-2026-18777 5.3 Mokksh Parekh August 21, 2026
2 TrueBooker – Appointment Booking and Scheduler System < 1.2.7 - Unauthenticated Privilege Escalation CVE-2026-18776 7.3 Abdullah Kareem August 21, 2026
3 TrueBooker – Appointment Booking and Scheduler System < 1.2.7 - Unauthenticated Information Exposure CVE-2026-18778 5.3 Luka Zimonjic August 21, 2026
4 TrueBooker – Appointment Booking and Scheduler System < 1.2.7 - Missing Authorization CVE-2026-18779 5.3 Erwan LR August 21, 2026
5 TrueBooker – Appointment Booking and Scheduler System <= 1.2.6 - Unauthenticated Privilege Escalation CVE-2026-73347 7.3 Abdullah Kareem "cyberkareem" August 19, 2026
6 TrueBooker <= 1.2.6 - Unauthenticated Authorization Bypass Through User-Controlled Key to Account Takeover to 'truebooker_wp_user_id' Parameter CVE-2026-18315 9.8 Décio Brandão August 18, 2026
7 TrueBooker <= 1.2.6 - Unauthenticated Account Takeover via Insecure Direct Object Reference in 'truebooker_wp_user_id' Parameter CVE-2026-16142 9.8 Nabil Irawan August 14, 2026
8 TrueBooker <= 1.2.3 - Missing Authorization to Unauthenticated Arbitrary Password Reset via 'tbab-userid' CVE-2026-14364 9.8 thevietronin August 6, 2026
9 TrueBooker <= 1.2.3 - Missing Authorization to Unauthenticated Arbitrary Password Reset via 'truebooker_wp_user_id' CVE-2026-14365 9.8 Nhien Pham (nhienit) (nhienit) August 6, 2026
10 TrueBooker – Appointment Booking and Scheduler System <= 1.2.3 - Unauthenticated Privilege Escalation CVE-2026-61951 9.8 yangsori July 17, 2026

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