CVE-2024-5975 in CZ Loan Management Plugin
Summary
by MITRE • 07/30/2024
The CZ Loan Management WordPress plugin through 1.1 does not properly sanitise and escape a parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection
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Analysis
by VulDB Data Team • 05/28/2025
The CZ Loan Management WordPress plugin version 1.1 contains a critical SQL injection vulnerability that stems from inadequate input sanitization and escaping mechanisms within its AJAX handling functionality. This vulnerability exists in the plugin's backend code where user-supplied parameters are directly incorporated into SQL queries without proper validation or escaping. The flaw specifically manifests in an AJAX action that is accessible to unauthenticated users, creating a significant attack surface that can be exploited by remote threat actors without requiring any authentication credentials.
The technical implementation of this vulnerability involves a parameter that flows from user input directly into a database query construction process. When an unauthenticated attacker sends a crafted request to the vulnerable AJAX endpoint, the plugin fails to sanitize the input before incorporating it into the SQL statement. This creates a classic SQL injection scenario where malicious input can manipulate the database query structure, potentially allowing attackers to extract sensitive data, modify database contents, or execute arbitrary commands on the underlying database server. The vulnerability is particularly concerning because it operates through an AJAX interface that is designed to handle user interactions, making it accessible through normal web browsing activities.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable complete database compromise and potentially lead to full system takeover. Attackers can leverage this vulnerability to bypass authentication mechanisms, escalate privileges, or gain persistent access to the WordPress installation. The fact that this vulnerability is exploitable by unauthenticated users means that any website running the affected plugin is immediately at risk upon exposure to the internet. This creates a significant threat vector for attackers who can scan for vulnerable WordPress installations and exploit the SQL injection without needing to first gain access to legitimate user accounts or administrative credentials.
Organizations affected by this vulnerability should immediately implement mitigations including updating to the latest plugin version if available, implementing web application firewalls to detect and block malicious SQL injection attempts, and reviewing database access controls to limit potential damage from successful exploitation. The vulnerability aligns with CWE-89 which specifically addresses SQL injection flaws, and maps to ATT&CK technique T1190 for exploitation of vulnerabilities in web applications. Security teams should also conduct comprehensive audits of all installed WordPress plugins to identify similar vulnerabilities and ensure proper input validation is implemented across all user-facing interfaces. The remediation process should include thorough testing of the patched version to ensure that the SQL injection vulnerability has been properly addressed without introducing new issues that could affect plugin functionality.