CVE-2026-26698: Student Alumni System SQLi Vulnerability

CVE-2026-26698 Overview

CVE-2026-26698 is a SQL Injection vulnerability affecting code-projects Simple Student Alumni System v1.0. The vulnerability exists in the /TracerStudy/modal_edit.php endpoint, allowing authenticated attackers with high privileges to inject malicious SQL queries and potentially extract sensitive information from the underlying database.

Critical Impact

Authenticated attackers can exploit this SQL Injection flaw to exfiltrate sensitive data from the database, potentially compromising student and alumni information stored in the system.

Affected Products

• Carmelo Simple Student Alumni System version 1.0
• code-projects Simple Student Alumni System v1.0

Discovery Timeline

• 2026-03-02 - CVE-2026-26698 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2026-26698

Vulnerability Analysis

This SQL Injection vulnerability exists in the /TracerStudy/modal_edit.php file of the Simple Student Alumni System. The application fails to properly sanitize user-supplied input before incorporating it into SQL queries, creating an injection point that attackers can exploit. While the attack requires network access and high-privilege authentication, successful exploitation can lead to complete confidentiality compromise of database contents.

The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), which represents one of the most common and dangerous web application security flaws. SQL Injection vulnerabilities allow attackers to manipulate database queries by injecting malicious SQL syntax through user-controllable input fields.

Root Cause

The root cause of this vulnerability is the absence of proper input validation and parameterized queries in the modal_edit.php file. User-supplied data is directly concatenated into SQL statements without sanitization, escaping, or the use of prepared statements. This allows specially crafted input to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

The attack is conducted over the network and targets the /TracerStudy/modal_edit.php endpoint. An attacker with high-level privileges (such as an administrator account) can craft malicious HTTP requests containing SQL injection payloads. These payloads are processed by the vulnerable PHP script and executed against the database, potentially allowing the attacker to read sensitive data including student records, alumni information, and other confidential data stored in the system.

The vulnerability mechanism involves injecting SQL syntax through form parameters or query strings processed by modal_edit.php. For technical details and proof-of-concept information, refer to the GitHub Bug Report Documentation.

Detection Methods for CVE-2026-26698

Indicators of Compromise

• Unusual database queries containing SQL syntax characters (', ", ;, --, /**/) in application logs
• Unexpected access patterns to /TracerStudy/modal_edit.php with malformed parameters
• Database error messages appearing in web server logs or responses
• Anomalous data extraction queries or bulk SELECT operations in database audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns targeting the vulnerable endpoint
• Monitor HTTP request logs for suspicious payloads containing SQL keywords (UNION, SELECT, INSERT, DELETE, DROP)
• Enable database query logging and alert on unusual query structures or error rates
• Deploy intrusion detection signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable verbose logging on the web server for requests to /TracerStudy/modal_edit.php
• Configure database audit logging to track all queries executed through the application
• Set up alerts for authentication failures followed by successful logins with subsequent suspicious activity
• Monitor for data exfiltration indicators such as large query result sets or unusual export operations

How to Mitigate CVE-2026-26698

Immediate Actions Required

• Restrict access to the /TracerStudy/modal_edit.php endpoint to only trusted administrators
• Implement network-level access controls to limit who can reach the vulnerable system
• Deploy a Web Application Firewall with SQL injection protection rules
• Review and audit all privileged accounts for unauthorized access
• Consider temporarily disabling the TracerStudy feature if not critical to operations

Patch Information

No official vendor patch is currently available for this vulnerability. The Simple Student Alumni System is a code-projects educational application that may not receive formal security updates. Organizations using this software should implement defensive measures or consider migrating to a more actively maintained solution.

For technical details about this vulnerability, see the GitHub Bug Report Documentation.

Workarounds

• Implement prepared statements and parameterized queries in modal_edit.php to prevent SQL injection
• Add input validation to sanitize all user-supplied data before database operations
• Deploy application-level firewall rules to block malicious SQL injection patterns
• Limit database user permissions to reduce the impact of successful exploitation

# Example: Restrict access to vulnerable endpoint via Apache configuration
<Location "/TracerStudy/modal_edit.php">
    Require ip 192.168.1.0/24
    Require valid-user
</Location>