CVE-2025-8269: Exam Form Submission SQLi Vulnerability

CVE-2025-8269 Overview

A critical SQL injection vulnerability has been identified in code-projects Exam Form Submission version 1.0. The vulnerability exists in the /admin/delete_s1.php file where improper handling of the ID parameter allows attackers to inject malicious SQL statements. 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 bypass authentication, extract sensitive data from the database, modify or delete records, and potentially gain further access to the underlying system.

Affected Products

• code-projects Exam Form Submission version 1.0

Discovery Timeline

• 2025-07-28 - CVE-2025-8269 published to NVD
• 2025-07-30 - Last updated in NVD database

Technical Details for CVE-2025-8269

Vulnerability Analysis

This vulnerability stems from insufficient input validation in the administrative deletion functionality of the Exam Form Submission application. The /admin/delete_s1.php endpoint accepts an ID parameter that is directly incorporated into SQL queries without proper sanitization or parameterization. This classic SQL injection vulnerability allows attackers to craft malicious input that modifies the intended SQL query structure, enabling them to execute arbitrary database commands.

The attack can be launched remotely over the network without requiring any authentication or user interaction, making it particularly dangerous for exposed installations. The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild.

Root Cause

The root cause of CVE-2025-8269 is the failure to implement proper input validation and parameterized queries (prepared statements) when handling the ID parameter in the delete functionality. The application directly concatenates user-supplied input into SQL query strings, violating secure coding practices and enabling injection attacks. This represents a CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) vulnerability pattern.

Attack Vector

The attack is network-based and targets the /admin/delete_s1.php endpoint. An attacker can craft HTTP requests containing malicious SQL payloads in the ID parameter. Since the parameter value is not sanitized before being used in database queries, the attacker's SQL code is executed directly against the database engine.

Typical exploitation scenarios include:

• Extracting sensitive information from database tables using UNION-based or error-based SQL injection techniques
• Bypassing authentication mechanisms by manipulating query logic
• Modifying or deleting critical application data
• In some configurations, potentially executing system commands through database features like xp_cmdshell (SQL Server) or LOAD_FILE (MySQL)

For technical details and proof-of-concept information, refer to the GitHub Issue Discussion and VulDB Vulnerability Report #317858.

Detection Methods for CVE-2025-8269

Indicators of Compromise

• Unusual or malformed requests to /admin/delete_s1.php containing SQL keywords such as UNION, SELECT, DROP, INSERT, or comment sequences (--, /**/)
• Database error messages appearing in HTTP responses indicating query manipulation
• Unexpected database activity logs showing unauthorized queries or data extraction
• Web server access logs with suspicious ID parameter values containing special characters or encoded payloads

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the ID parameter
• Implement database activity monitoring to alert on anomalous query patterns or unauthorized data access
• Configure intrusion detection systems (IDS) with signatures for common SQL injection attack strings
• Enable detailed logging on the web server and database to capture suspicious activity for forensic analysis

Monitoring Recommendations

• Monitor HTTP request logs for requests to /admin/delete_s1.php with unusual parameter values
• Set up alerts for database errors that may indicate failed injection attempts
• Review database audit logs regularly for unauthorized SELECT, DELETE, or UPDATE operations
• Implement real-time alerting for any access to sensitive database tables from unexpected sources

How to Mitigate CVE-2025-8269

Immediate Actions Required

• Remove or restrict access to the /admin/delete_s1.php endpoint until a patch is applied
• Implement network-level access controls to limit administrative panel access to trusted IP addresses only
• Deploy a Web Application Firewall with SQL injection protection rules
• Review database permissions and apply the principle of least privilege to the application's database user account

Patch Information

As of the last NVD update on 2025-07-30, no official vendor patch has been released for this vulnerability. Organizations using code-projects Exam Form Submission 1.0 should monitor the Code Projects Resource Hub for security updates. Given the critical nature of this SQL injection vulnerability and the public availability of exploit information, immediate mitigation through workarounds is strongly recommended.

Workarounds

• Implement input validation on the ID parameter to accept only numeric values
• Modify the vulnerable code to use parameterized queries or prepared statements instead of string concatenation
• Apply a WAF rule to filter and block SQL injection attempts on the affected endpoint
• Consider disabling the delete functionality entirely until proper security controls can be implemented
• Restrict access to the admin directory using .htaccess or server configuration to limit exposure

# Example: Apache .htaccess to restrict admin access by IP
<Directory "/path/to/app/admin">
    Order deny,allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.100
</Directory>