CVE-2026-26700: Personnel Property Equipment System SQLi

CVE-2026-26700 Overview

A SQL Injection vulnerability exists in sourcecodester Personnel Property Equipment System v1.0. The vulnerability is located in the /ppes/admin/edit_employee.php endpoint, which fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows unauthenticated remote attackers to execute arbitrary SQL commands against the backend database, potentially leading to complete database compromise, data exfiltration, and unauthorized administrative access.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection vulnerability to access, modify, or delete sensitive personnel and equipment data, potentially compromising the entire application database.

Affected Products

• Jon-remus-sevellejo Personnel Property Equipment System v1.0
• Personnel Property Equipment System installations using vulnerable /ppes/admin/edit_employee.php endpoint

Discovery Timeline

• 2026-03-02 - CVE-2026-26700 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2026-26700

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) affects the edit_employee.php administrative endpoint within the Personnel Property Equipment System. The application constructs database queries using unsanitized user input, allowing attackers to inject malicious SQL statements that execute with the privileges of the database user.

SQL Injection vulnerabilities in administrative endpoints are particularly dangerous because they often provide direct access to sensitive user records, authentication credentials, and system configuration data. The network-accessible nature of this vulnerability means exploitation requires no prior authentication or special privileges, significantly expanding the potential attack surface.

Root Cause

The root cause of this vulnerability is insufficient input validation and improper construction of SQL queries in the edit_employee.php file. Instead of using parameterized queries or prepared statements, the application directly concatenates user-controlled input into SQL query strings. This classic SQL Injection pattern allows attackers to break out of the intended query context and inject arbitrary SQL commands.

Attack Vector

The vulnerability is exploitable over the network through HTTP requests to the /ppes/admin/edit_employee.php endpoint. An attacker can craft malicious HTTP parameters containing SQL syntax that, when processed by the vulnerable script, executes unintended database operations. Common exploitation techniques include UNION-based injection for data extraction, boolean-based blind injection for inferring database contents, and stacked queries for data manipulation or command execution (depending on database configuration).

The attack does not require authentication, user interaction, or special conditions, making it highly exploitable in exposed deployments. For detailed technical analysis and proof-of-concept information, refer to the GitHub SQL Injection Bug Report.

Detection Methods for CVE-2026-26700

Indicators of Compromise

• Unusual or malformed HTTP requests to /ppes/admin/edit_employee.php containing SQL keywords such as UNION, SELECT, INSERT, UPDATE, DELETE, or comment sequences (--, /*)
• Database error messages appearing in application logs or HTTP responses indicating syntax errors from injected SQL
• Unexpected database queries accessing multiple tables or extracting large data sets
• Evidence of data exfiltration or unauthorized modifications to employee records

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL Injection patterns targeting the /ppes/admin/edit_employee.php endpoint
• Implement application-level logging to capture all requests to administrative endpoints with detailed parameter logging
• Configure database audit logging to monitor for anomalous query patterns, especially queries containing suspicious SQL keywords or accessing sensitive tables
• Use intrusion detection systems with signatures for common SQL Injection payloads

Monitoring Recommendations

• Monitor web server access logs for requests to /ppes/admin/edit_employee.php with unusual query string parameters or POST data
• Enable database query logging and alert on queries that deviate from expected application behavior patterns
• Implement real-time alerting for database errors that may indicate injection attempts
• Review audit logs for unauthorized access to employee or equipment records

How to Mitigate CVE-2026-26700

Immediate Actions Required

• Restrict network access to the Personnel Property Equipment System administrative interface to trusted IP addresses only
• Consider temporarily disabling the edit_employee.php functionality until a patch is applied
• Implement WAF rules to filter SQL Injection attempts targeting the vulnerable endpoint
• Review database logs for evidence of prior exploitation and assess potential data compromise

Patch Information

No vendor patch is currently available for this vulnerability. The Personnel Property Equipment System is maintained as an open-source project. Users should monitor the project repository for security updates. In the absence of an official patch, manual remediation of the source code is recommended by implementing parameterized queries or prepared statements in the edit_employee.php file.

Workarounds

• Implement input validation at the web server or reverse proxy level to sanitize requests before they reach the application
• Use a Web Application Firewall configured with SQL Injection detection rules to block malicious requests
• Restrict database user privileges to the minimum required, limiting potential damage from successful exploitation
• Consider deploying the application behind a VPN or implementing IP-based access controls to limit exposure

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