CVE-2025-13396: Courier Management System SQLi Vulnerability

CVE-2025-13396 Overview

A SQL Injection vulnerability has been identified in code-projects Courier Management System version 1.0. This vulnerability affects the /add-office.php file, where improper handling of the OfficeName argument allows attackers to inject malicious SQL queries. The attack can be initiated remotely by authenticated users, potentially leading to unauthorized data access, modification, or deletion within the application's database.

Critical Impact

This SQL injection vulnerability allows remote attackers to manipulate database queries through the OfficeName parameter, potentially compromising the integrity and confidentiality of courier management data.

Affected Products

• Carmelogarcia Courier Management System 1.0
• code-projects Courier Management System 1.0

Discovery Timeline

• 2025-11-19 - CVE-2025-13396 published to NVD
• 2025-11-20 - Last updated in NVD database

Technical Details for CVE-2025-13396

Vulnerability Analysis

This vulnerability exists in the Courier Management System's office management functionality. The /add-office.php endpoint accepts user-supplied input through the OfficeName parameter without proper sanitization or parameterized query handling. When a malicious user submits specially crafted input containing SQL syntax, the application directly concatenates this input into SQL queries, allowing the attacker to alter the intended query logic.

The exploit has been made publicly available, increasing the risk of exploitation in the wild. Organizations using this courier management system should prioritize remediation to prevent potential data breaches.

Root Cause

The root cause of this vulnerability is improper input validation and the use of unsanitized user input in SQL query construction. The application fails to implement prepared statements or parameterized queries when processing the OfficeName field, directly embedding user-controlled data into database queries. This classic injection flaw (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) allows attackers to break out of the intended data context and execute arbitrary SQL commands.

Attack Vector

The attack is network-based and can be executed remotely by an authenticated user with low privileges. An attacker would submit a malicious payload through the OfficeName parameter when adding a new office entry. The payload could include SQL statements designed to extract sensitive data, modify existing records, or bypass authentication mechanisms.

The vulnerability is exploited by injecting SQL metacharacters such as single quotes, semicolons, or UNION-based payloads into the OfficeName field. Without proper escaping or parameterization, the backend database interprets the injected SQL as legitimate commands, executing them with the application's database privileges. For detailed technical analysis, refer to the GitHub CVE Issue Tracking and VulDB Vulnerability ID #332924.

Detection Methods for CVE-2025-13396

Indicators of Compromise

• Unusual SQL syntax or error messages in application logs related to /add-office.php
• Database query logs showing unexpected UNION SELECT, DROP, INSERT, or DELETE statements
• Abnormal access patterns to the /add-office.php endpoint with large or encoded payloads
• Error logs indicating SQL syntax errors or database connection anomalies

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the OfficeName parameter
• Monitor application logs for SQL syntax errors or injection attempt signatures
• Deploy database activity monitoring to identify anomalous query patterns or unauthorized data access
• Use intrusion detection systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Enable detailed logging for all requests to /add-office.php including full POST body contents
• Set up alerts for failed SQL queries or database errors originating from the courier management application
• Monitor for unusual database query execution times that may indicate data exfiltration attempts
• Review access logs for repeated requests to the vulnerable endpoint from single sources

How to Mitigate CVE-2025-13396

Immediate Actions Required

• Restrict network access to the Courier Management System to trusted IP ranges only
• Implement input validation on the OfficeName parameter to allow only alphanumeric characters
• Deploy a Web Application Firewall (WAF) with SQL injection detection rules
• Review and audit all user accounts with access to the office management functionality

Patch Information

At the time of publication, no official vendor patch has been released for this vulnerability. Organizations should monitor the Code Projects Resource Hub for updates and security advisories. Given the public availability of exploit information, implementing workarounds and compensating controls is strongly recommended until an official fix is available.

Workarounds

• Replace direct SQL query concatenation with parameterized queries or prepared statements in the /add-office.php file
• Implement server-side input validation to reject any SQL metacharacters in the OfficeName field
• Apply the principle of least privilege to the database account used by the application
• Consider temporarily disabling the office addition functionality if not critical to operations

If source code modification is possible, the vulnerable query construction should be replaced with parameterized queries. For PHP applications, this typically involves using PDO with prepared statements instead of direct string concatenation. Ensure all user input is treated as untrusted data and properly escaped or bound as parameters to prevent injection attacks.