CVE-2025-7442: WPGYM Plugin SQL Injection Vulnerability

CVE-2025-7442 Overview

The WPGYM - WordPress Gym Management System plugin for WordPress contains a critical SQL Injection vulnerability affecting multiple AJAX handler functions. The vulnerability exists in the MJ_gmgt_delete_class_limit_for_member, MJ_gmgt_get_yearly_income_expense, MJ_gmgt_get_monthly_income_expense, MJ_gmgt_add_class_limit, MJ_gmgt_view_meeting_detail, and MJ_gmgt_create_meeting functions in all versions up to and including 67.8.0. Due to insufficient escaping on user-supplied parameters and lack of proper SQL query preparation, unauthenticated attackers can append malicious SQL queries to extract sensitive information from the WordPress database.

Critical Impact

This SQL Injection vulnerability allows unauthenticated attackers to extract sensitive data from the database, including user credentials, payment information, and member personal details stored by the gym management system.

Affected Products

• WPGYM - WordPress Gym Management System plugin versions up to and including 67.8.0
• WordPress installations with the vulnerable WPGYM plugin activated
• All gym management data stored in the WordPress database

Discovery Timeline

• July 11, 2025 - CVE-2025-7442 published to NVD
• July 15, 2025 - Last updated in NVD database

Technical Details for CVE-2025-7442

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) stems from a fundamental failure to implement secure database query practices in the WPGYM plugin. The affected functions accept user-controlled input through AJAX requests without proper sanitization or parameterization. The plugin fails to use WordPress's built-in $wpdb->prepare() method, which would properly escape parameters and prevent SQL injection attacks.

The vulnerability is particularly severe because it does not require authentication, meaning any remote attacker can exploit it without needing valid WordPress credentials. The affected functions handle sensitive gym management operations including member class limits, financial income/expense reports, and meeting management features.

Root Cause

The root cause of this vulnerability is insufficient input validation and the absence of prepared statements in the database query construction. The plugin directly concatenates user-supplied parameters into SQL queries rather than utilizing WordPress's secure database abstraction layer. This allows attackers to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack is network-based and can be executed remotely against any WordPress site running the vulnerable WPGYM plugin. Attackers can craft malicious HTTP requests targeting the AJAX handlers associated with the vulnerable functions. By injecting SQL syntax into parameters expected by functions like MJ_gmgt_get_yearly_income_expense or MJ_gmgt_view_meeting_detail, an attacker can manipulate the underlying database queries to extract confidential information.

The vulnerability allows for data exfiltration through techniques such as UNION-based injection, boolean-based blind injection, or time-based blind injection, depending on the specific function being targeted and the application's response behavior.

Detection Methods for CVE-2025-7442

Indicators of Compromise

• Unusual or malformed HTTP requests to WordPress AJAX endpoints containing SQL syntax characters such as single quotes, double dashes, UNION statements, or SELECT keywords
• Database query logs showing unexpected or malformed queries originating from WPGYM plugin functions
• Abnormal data access patterns in gym management database tables, particularly member information, financial records, or meeting data
• Web server access logs with suspicious parameter values targeting WPGYM AJAX actions

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in requests to WordPress AJAX endpoints
• Enable database query logging and monitor for queries containing unexpected SQL keywords or syntax anomalies
• Implement intrusion detection signatures for common SQL injection payloads targeting the specific vulnerable function names
• Configure WordPress security plugins to alert on suspicious AJAX request patterns

Monitoring Recommendations

• Monitor HTTP request logs for POST requests to /wp-admin/admin-ajax.php with actions matching the vulnerable function names
• Establish baseline database access patterns and alert on deviations, particularly unauthorized SELECT queries against sensitive tables
• Review web application logs for error messages indicating SQL syntax errors, which may indicate active exploitation attempts
• Monitor for data exfiltration indicators such as large response sizes from AJAX endpoints

How to Mitigate CVE-2025-7442

Immediate Actions Required

• Update the WPGYM - WordPress Gym Management System plugin to a patched version beyond 67.8.0 immediately
• If an update is not yet available, consider temporarily disabling the WPGYM plugin until a security patch is released
• Implement WAF rules to block SQL injection attempts targeting WordPress AJAX endpoints
• Review database access logs for signs of prior exploitation and assess potential data exposure

Patch Information

Security updates should be obtained from the official plugin source. Refer to the Codecanyon WPGYM listing for the latest version information. Additional vulnerability details are available in the Wordfence Vulnerability Report.

Workarounds

• Deploy a Web Application Firewall with SQL injection detection rules to filter malicious requests before they reach the vulnerable plugin
• Restrict access to WordPress AJAX endpoints at the web server level for untrusted IP addresses where feasible
• Implement database user privilege restrictions to limit the damage potential if exploitation occurs (read-only access where possible)
• Consider using WordPress security plugins that provide runtime application protection and input sanitization

# Example: Block SQL injection attempts with ModSecurity rule
SecRule ARGS "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    log,\
    msg:'SQL Injection Attempt Detected',\
    tag:'SQLI'"