CVE-2025-6935: Campcodes Sales And Inventory System SQLi

CVE-2025-6935 Overview

A critical SQL injection vulnerability has been identified in Campcodes Sales and Inventory System version 1.0. The vulnerability exists within the /pages/payment_add.php file, where improper handling of the cid parameter allows attackers to inject malicious SQL commands. This flaw enables remote attackers to manipulate database queries without authentication, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive business data, manipulate inventory records, compromise payment information, or potentially gain control over the underlying database server.

Affected Products

• Campcodes Sales and Inventory System 1.0

Discovery Timeline

• 2025-07-01 - CVE-2025-6935 published to NVD
• 2025-07-07 - Last updated in NVD database

Technical Details for CVE-2025-6935

Vulnerability Analysis

This vulnerability stems from insufficient input validation in the payment processing functionality of Campcodes Sales and Inventory System. The /pages/payment_add.php endpoint accepts user-supplied input through the cid parameter without proper sanitization or parameterized query implementation. When this parameter is passed directly into SQL queries, attackers can craft malicious input that alters the intended query logic.

The network-accessible nature of this vulnerability means that any attacker with HTTP access to the application can attempt exploitation without requiring prior authentication. The exploit has been publicly disclosed, increasing the risk of widespread attacks against vulnerable installations.

Root Cause

The root cause of CVE-2025-6935 is improper neutralization of special elements used in SQL commands (CWE-74: Injection). The application fails to properly validate, filter, or escape user-controlled input in the cid parameter before incorporating it into SQL queries. This allows special SQL characters and commands to be interpreted by the database engine rather than treated as literal data.

Attack Vector

The attack is executed remotely over the network by sending crafted HTTP requests to the /pages/payment_add.php endpoint. An attacker manipulates the cid parameter to include SQL syntax that breaks out of the intended query structure. This could involve techniques such as:

• Union-based injection to extract data from other database tables
• Boolean-based blind injection to enumerate database contents
• Time-based blind injection for data extraction when no visible output is returned
• Stacked queries (if supported) to execute additional SQL statements

The vulnerability does not require authentication or user interaction, making it particularly dangerous in internet-facing deployments. Technical details regarding the exploitation method have been documented in the GitHub Issue for CVE-9 and VulDB #314456.

Detection Methods for CVE-2025-6935

Indicators of Compromise

• Unusual or malformed requests to /pages/payment_add.php containing SQL syntax in the cid parameter
• Database error messages appearing in application logs or HTTP responses
• Unexpected database queries or access patterns in database audit logs
• Evidence of data exfiltration through error-based or out-of-band SQL injection techniques

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the cid parameter
• Monitor HTTP request logs for suspicious characters such as single quotes, double dashes, and SQL keywords targeting payment_add.php
• Enable database query logging and alert on anomalous query structures or unauthorized data access
• Deploy intrusion detection signatures that identify known SQL injection attack patterns

Monitoring Recommendations

• Configure real-time alerting for any requests to /pages/payment_add.php containing common SQL injection payloads
• Establish baseline database activity patterns and alert on deviations that may indicate exploitation
• Monitor for failed or unusual database authentication attempts following web application access

How to Mitigate CVE-2025-6935

Immediate Actions Required

• Restrict network access to the Campcodes Sales and Inventory System to trusted IP addresses only
• Implement a Web Application Firewall (WAF) with SQL injection protection rules in front of the application
• Review database permissions and apply the principle of least privilege to the application's database account
• Enable comprehensive logging for the /pages/payment_add.php endpoint and database queries

Patch Information

At the time of publication, no official vendor patch has been released for CVE-2025-6935. Organizations should monitor the CampCodes website for security updates. In the absence of an official patch, implementing defensive measures and input validation at the application or infrastructure level is critical.

Workarounds

• Deploy a WAF rule to block or sanitize requests containing SQL metacharacters in the cid parameter
• Implement application-level input validation to restrict the cid parameter to expected numeric values only
• Consider disabling or restricting access to the /pages/payment_add.php functionality until a patch is available
• Isolate the database server on a separate network segment with strict access controls

# Example WAF rule to block SQL injection attempts on the cid parameter
# ModSecurity configuration example
SecRule ARGS:cid "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in cid parameter',\
    tag:'CVE-2025-6935'"