CVE-2026-36945: Repair Shop Management System SQL Injection

CVE-2026-36945 Overview

Sourcecodester Computer and Mobile Repair Shop Management System v1.0 contains a SQL injection vulnerability in the file /rsms/admin/clients/manage_client.php. This vulnerability allows authenticated attackers with administrative privileges to inject malicious SQL queries through user-controllable input, potentially leading to unauthorized data access.

Critical Impact

Authenticated administrators can exploit this SQL injection flaw to extract sensitive information from the database, including customer records, repair order details, and potentially system credentials.

Affected Products

• Sourcecodester Computer and Mobile Repair Shop Management System v1.0

Discovery Timeline

• 2026-04-13 - CVE-2026-36945 published to NVD
• 2026-04-13 - Last updated in NVD database

Technical Details for CVE-2026-36945

Vulnerability Analysis

This vulnerability is classified as CWE-89: Improper Neutralization of Special Elements used in an SQL Command (SQL Injection). The flaw exists in the client management functionality of the application, specifically within the manage_client.php file located in the admin directory.

SQL injection vulnerabilities occur when user-supplied data is incorporated into database queries without proper sanitization or parameterization. In this case, an authenticated administrator can manipulate input parameters to inject arbitrary SQL commands that are then executed by the underlying database engine.

The attack requires network access and high privileges (administrative authentication), which limits the attack surface. However, the vulnerability still poses a risk for unauthorized data disclosure from the database.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries (prepared statements) in the manage_client.php file. User-supplied input is directly concatenated into SQL query strings without adequate sanitization, allowing SQL metacharacters to be interpreted as part of the query structure rather than as literal data values.

Attack Vector

The vulnerability is exploitable over the network by authenticated administrators. An attacker with valid administrative credentials can craft malicious requests to the /rsms/admin/clients/manage_client.php endpoint containing SQL injection payloads. Due to the lack of input sanitization, these payloads are executed against the database, enabling the attacker to extract confidential information.

The attack does not require user interaction and operates within unchanged scope, affecting only the confidentiality of data within the vulnerable system. For detailed technical analysis of the vulnerability, see the GitHub SQL Injection Report.

Detection Methods for CVE-2026-36945

Indicators of Compromise

• Unusual or malformed HTTP requests to /rsms/admin/clients/manage_client.php containing SQL syntax characters such as single quotes, double dashes, or UNION keywords
• Database query logs showing unexpected SQL statements or error messages related to SQL syntax
• Anomalous data access patterns by administrator accounts, particularly bulk data retrieval operations

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL injection detection rules targeting the vulnerable endpoint
• Implement database activity monitoring to detect abnormal query patterns and potential data exfiltration
• Review web server access logs for requests to manage_client.php containing suspicious URL-encoded SQL characters

Monitoring Recommendations

• Enable detailed logging for the /rsms/admin/ directory and monitor for anomalous request patterns
• Configure database auditing to track SELECT queries executed against sensitive tables like customer records
• Implement alerting for SQL error messages appearing in application logs, which may indicate injection attempts

How to Mitigate CVE-2026-36945

Immediate Actions Required

• Restrict access to the administrative interface to trusted IP addresses only
• Audit administrative user accounts and remove unnecessary privileged access
• Consider temporarily disabling the client management functionality until a patch is applied
• Implement input validation at the web server or WAF level to filter SQL injection patterns

Patch Information

No official vendor patch has been identified for this vulnerability at this time. Organizations using Sourcecodester Computer and Mobile Repair Shop Management System should contact the vendor for security updates or consider implementing the workarounds described below. Monitor the GitHub SQL Injection Report for additional technical details and potential remediation guidance.

Workarounds

• Deploy a Web Application Firewall (WAF) in front of the application with SQL injection protection rules enabled
• Modify the vulnerable manage_client.php file to use parameterized queries (prepared statements) instead of string concatenation
• Implement strict input validation using allowlists for expected parameter values
• Limit database user privileges to the minimum required for application functionality to reduce the impact of successful exploitation

# Example: Apache .htaccess restriction for admin directory
# Restrict admin access to trusted IP addresses only
<Directory "/var/www/html/rsms/admin">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Directory>