CVE-2025-6954: Campcodes Employee Management SQLI Flaw

CVE-2025-6954 Overview

A critical SQL injection vulnerability has been identified in Campcodes Employee Management System version 1.0. The vulnerability exists in the /applyleave.php file, where improper handling of the ID parameter allows attackers to inject malicious SQL queries. 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 employee data, bypass authentication mechanisms, or potentially gain full database access through the vulnerable /applyleave.php endpoint.

Affected Products

• Campcodes Employee Management System 1.0

Discovery Timeline

• 2025-07-01 - CVE-2025-6954 published to NVD
• 2025-07-07 - Last updated in NVD database

Technical Details for CVE-2025-6954

Vulnerability Analysis

This SQL injection vulnerability stems from inadequate input validation in the /applyleave.php file of the Campcodes Employee Management System. The ID parameter is directly incorporated into SQL queries without proper sanitization or parameterized query implementation. When an attacker supplies malicious input through this parameter, the application fails to distinguish between legitimate data and SQL commands, allowing the injected SQL code to be executed against the backend database.

The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating that the application fails to properly neutralize special elements before passing user input to database queries. Since the exploit has been publicly disclosed, organizations using this system face increased risk of exploitation.

Root Cause

The root cause of this vulnerability is the absence of input validation and sanitization for the ID parameter in the /applyleave.php file. The application directly concatenates user-supplied input into SQL queries rather than using prepared statements or parameterized queries. This classic SQL injection pattern occurs when developers fail to treat user input as untrusted data, allowing malicious actors to break out of the intended query structure and execute arbitrary SQL commands.

Attack Vector

The attack can be executed remotely over the network without requiring authentication. An attacker can craft malicious HTTP requests targeting the /applyleave.php endpoint, manipulating the ID parameter to inject SQL syntax. Successful exploitation could allow attackers to:

• Extract sensitive employee information from the database
• Modify or delete database records
• Bypass authentication controls
• Potentially escalate privileges within the application
• In some configurations, execute operating system commands through database functions

The vulnerability mechanism involves injecting SQL metacharacters through the ID parameter that break the intended query structure. When the backend database processes these malformed queries, the injected SQL commands are executed with the privileges of the database user. For technical details and proof-of-concept information, refer to the GitHub PoC Issue #32.

Detection Methods for CVE-2025-6954

Indicators of Compromise

• Unusual or malformed HTTP requests targeting /applyleave.php with suspicious ID parameter values
• Database error messages in application logs indicating SQL syntax errors
• Unexpected database query patterns or access to sensitive tables
• Signs of data exfiltration or unauthorized database modifications

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the ID parameter
• Monitor web server access logs for requests to /applyleave.php containing SQL metacharacters such as single quotes, double dashes, or UNION statements
• Enable database query logging to identify anomalous query structures
• Deploy intrusion detection systems with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Configure alerting for repeated failed SQL queries or database errors from the Employee Management System
• Monitor for unusual data access patterns or bulk data retrieval from employee tables
• Implement real-time log analysis for the /applyleave.php endpoint
• Track authentication events and privilege escalation attempts within the application

How to Mitigate CVE-2025-6954

Immediate Actions Required

• Restrict access to /applyleave.php or disable the affected functionality until a patch is available
• Implement WAF rules to filter SQL injection attempts targeting the ID parameter
• Review and audit database permissions for the application user account
• Consider placing the Employee Management System behind additional network access controls

Patch Information

No official vendor patch information is currently available. Organizations should monitor the CampCodes website for security updates. Additional vulnerability details can be found at VulDB #314491.

Workarounds

• Deploy a Web Application Firewall configured to block SQL injection patterns
• Implement custom input validation at the web server or reverse proxy level to sanitize the ID parameter
• Restrict network access to the Employee Management System to trusted IP addresses only
• Consider implementing prepared statements or parameterized queries if source code modification is possible
• Enable database auditing to detect and respond to exploitation attempts

# Example WAF rule to block SQL injection in ID parameter (ModSecurity)
SecRule ARGS:ID "@detectSQLi" \
    "id:1001,\
    phase:2,\
    block,\
    msg:'SQL Injection attempt detected in ID parameter',\
    logdata:'Matched Data: %{MATCHED_VAR}',\
    severity:'CRITICAL'"