CVE-2026-3496 in JetBooking Plugin
Summary
by MITRE • 03/11/2026
The JetBooking plugin for WordPress is vulnerable to SQL Injection via the 'check_in_date' parameter in all versions up to, and including, 4.0.3. This is 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.
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Analysis
by VulDB Data Team • 03/14/2026
The JetBooking plugin for WordPress represents a significant security vulnerability through its susceptibility to SQL injection attacks via the check_in_date parameter. This flaw affects all versions up to and including 4.0.3, creating a persistent risk for WordPress installations that utilize this booking plugin. The vulnerability stems from inadequate input sanitization practices within the plugin's codebase, where user-supplied parameters are not properly escaped before being incorporated into database queries. This oversight creates an exploitable condition that allows malicious actors to manipulate the intended query execution flow.
The technical implementation of this vulnerability demonstrates a classic SQL injection vector where the check_in_date parameter serves as the attack surface for unauthorized database access. When the plugin processes this parameter without proper escaping mechanisms, it fails to distinguish between legitimate user input and malicious SQL commands. The lack of prepared statement usage or proper parameter binding creates an environment where attackers can inject additional SQL fragments that execute within the existing query context. This allows for the construction of complex malicious queries that can bypass authentication mechanisms and extract sensitive data from the underlying database.
From an operational perspective, this vulnerability presents a severe risk to WordPress sites using JetBooking plugin, as it requires no authentication to exploit. Attackers can leverage this weakness to extract confidential information including user credentials, booking details, and potentially other sensitive data stored within the database. The impact extends beyond simple data theft, as successful exploitation could enable attackers to modify or delete booking records, disrupt service availability, and potentially escalate privileges within the affected system. The vulnerability's reach is particularly concerning given that it affects all versions up to 4.0.3, suggesting a widespread exposure across numerous installations.
The security implications align with CWE-89, which categorizes SQL injection vulnerabilities as critical weaknesses in software applications. This classification reflects the fundamental nature of the flaw where improper input handling leads to unauthorized database access. The vulnerability also maps to ATT&CK technique T1071.004, which covers application layer protocol manipulation, specifically targeting database communication protocols. Organizations should prioritize immediate remediation through plugin updates to address this vulnerability, while implementing additional protective measures such as web application firewalls and database access monitoring. The absence of proper input validation and parameter sanitization in this case represents a critical failure in secure coding practices that directly contributes to the exploitable condition.
Mitigation strategies should include immediate plugin version updates to the latest secure release, along with comprehensive database access logging to detect potential exploitation attempts. Network-based protections such as intrusion detection systems can help identify malicious SQL injection patterns, while application-level controls should enforce strict input validation and output encoding. Regular security assessments of third-party plugins and maintaining updated security patches form essential components of a comprehensive defense strategy. Organizations should also consider implementing database query monitoring to detect unusual query patterns that may indicate exploitation attempts, as well as establishing incident response procedures specifically tailored to address SQL injection vulnerabilities in their WordPress environments.