CVE-2026-0701: Intern Membership Management System SQLi

CVE-2026-0701 Overview

A SQL injection vulnerability has been identified in code-projects Intern Membership Management System version 1.0. This security flaw exists within the /intern/admin/add_admin.php file, where the Username parameter is vulnerable to SQL injection attacks due to improper input sanitization. The vulnerability can be exploited remotely over the network, allowing attackers to manipulate database queries and potentially compromise the underlying database system.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data, modify database contents, or potentially execute administrative operations on the affected system.

Affected Products

• code-projects Intern Membership Management System 1.0
• /intern/admin/add_admin.php endpoint

Discovery Timeline

• 2026-01-08 - CVE-2026-0701 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2026-0701

Vulnerability Analysis

This vulnerability falls under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The affected functionality resides in the administrative module responsible for adding new administrators to the system. When user-supplied input for the Username parameter is processed, the application fails to properly sanitize or parameterize the input before incorporating it into SQL queries.

The network-accessible nature of this vulnerability means that an attacker with high-privileged access can remotely inject malicious SQL statements through the Username field. Successful exploitation could result in unauthorized data access, data modification, or in severe cases, complete database compromise. The exploit for this vulnerability has been publicly documented, increasing the risk of active exploitation in the wild.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and sanitization in the add_admin.php file. The application directly incorporates user-supplied data into SQL queries without using parameterized queries or prepared statements. This allows specially crafted input containing SQL metacharacters to modify the intended query logic.

Attack Vector

The attack vector is network-based, requiring the attacker to have authenticated access with elevated privileges to the administrative interface. The attacker can submit a malicious payload through the Username parameter in requests to /intern/admin/add_admin.php. The injected SQL code is then executed by the database server, potentially allowing the attacker to:

• Extract sensitive information from the database
• Bypass authentication mechanisms
• Modify or delete database records
• Escalate privileges within the application

The vulnerability is exploited by crafting a malicious HTTP request where the Username parameter contains SQL injection payloads such as boolean-based blind injection, time-based blind injection, or UNION-based injection techniques. For detailed technical information about the exploitation methodology, refer to the GitHub CVE SQL Injection Guide.

Detection Methods for CVE-2026-0701

Indicators of Compromise

• Unusual database query patterns originating from the /intern/admin/add_admin.php endpoint
• HTTP requests to add_admin.php containing SQL metacharacters such as single quotes, double dashes, or UNION keywords in the Username parameter
• Database error messages appearing in application logs indicating malformed SQL syntax
• Unexpected administrative accounts created in the system

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection attempts targeting the Username parameter
• Configure database activity monitoring to alert on suspicious query patterns or unauthorized data access
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable detailed logging on the web server to capture all requests to administrative endpoints

Monitoring Recommendations

• Monitor access logs for the /intern/admin/add_admin.php endpoint for unusual request patterns or high-frequency access
• Set up alerts for database errors that may indicate SQL injection attempts
• Review newly created administrator accounts regularly to identify unauthorized entries
• Implement real-time monitoring of database queries for injection patterns

How to Mitigate CVE-2026-0701

Immediate Actions Required

• Restrict network access to the administrative interface using IP whitelisting or VPN requirements
• Implement a Web Application Firewall (WAF) with SQL injection protection rules immediately
• Disable or temporarily remove the /intern/admin/add_admin.php functionality until a patch is available
• Review database logs for evidence of exploitation and audit administrator accounts for unauthorized entries

Patch Information

No official patch from the vendor has been documented at this time. Organizations using the Intern Membership Management System should monitor the Code Projects Overview for security updates. Additional vulnerability details are available at VulDB #339978 Details.

Workarounds

• Implement input validation by sanitizing all user inputs, particularly the Username parameter, to reject SQL metacharacters
• Use prepared statements or parameterized queries in the application code to prevent SQL injection
• Apply the principle of least privilege to database accounts used by the application
• Consider deploying the application behind a reverse proxy with SQL injection filtering capabilities
• Restrict administrative access to trusted internal networks only

# Example: Apache mod_security rule to block SQL injection attempts
SecRule ARGS:Username "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection Attempt Detected in Username Parameter',\
    log,\
    auditlog"