CVE-2026-15289
Received Received - Intake

Time-Based SQL Injection in Booking Calendar WordPress Plugin

Publication date: 2026-07-10

Last updated on: 2026-07-10

Assigner: Wordfence

Description
The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to time-based SQL Injection via the ‘wpdevart_id’ parameter in all versions up to, and including, 3.2.17 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. In order to exploit the vulnerability, the Pro version of the plugin must be installed and activated, with the 'Delete previous dates' option checked.

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Meta Information

Published
2026-07-10
Last Modified
2026-07-10
Generated
2026-07-10
AI Q&A
2026-07-10
EPSS Evaluated
N/A
NVD
CVE-2026-15289
EUVD
EUVD-2026-42798

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wpdevart appointment_booking_system to 3.2.17 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Impact Analysis

This vulnerability allows unauthenticated attackers to perform time-based SQL Injection attacks, which can be used to extract sensitive information from the website's database. This could lead to unauthorized access to confidential data stored within the database.

Executive Summary

The Booking calendar, Appointment Booking System plugin for WordPress has a time-based SQL Injection vulnerability in the ‘wpdevart_id’ parameter in all versions up to and including 3.2.17. This happens because the plugin does not properly escape user input and does not sufficiently prepare the SQL query. As a result, unauthenticated attackers can inject additional SQL commands into existing queries.

To exploit this vulnerability, the Pro version of the plugin must be installed and activated, and the 'Delete previous dates' option must be enabled.

Mitigation Strategies

To mitigate this vulnerability, ensure that the Pro version of the Booking calendar, Appointment Booking System plugin for WordPress is either not installed or updated beyond version 3.2.17.

Additionally, disable or uncheck the 'Delete previous dates' option if the Pro version is in use, as exploitation requires this option to be enabled.

Applying updates or patches provided by the plugin developer or security vendors is recommended to fix the insufficient escaping and SQL query preparation issues.

Compliance Impact

The vulnerability allows unauthenticated attackers to perform time-based SQL Injection to extract sensitive information from the database. This exposure of sensitive data could potentially lead to non-compliance with data protection regulations such as GDPR and HIPAA, which require the protection of personal and sensitive information from unauthorized access.

However, the provided information does not explicitly discuss the impact on compliance with specific standards or regulations.

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