CVE-2025-11116: Simple Scheduling System SQLi Vulnerability

CVE-2025-11116 Overview

A SQL Injection vulnerability has been identified in code-projects Simple Scheduling System version 1.0. The vulnerability exists in the /add.home.php file where the faculty parameter is not properly sanitized before being used in database queries. This flaw allows remote attackers to inject malicious SQL commands, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability to extract sensitive data, modify database records, or potentially gain unauthorized access to the underlying system through database-level attacks.

Affected Products

• Fabian Simple Scheduling System 1.0
• code-projects Simple Scheduling System 1.0

Discovery Timeline

• 2025-09-28 - CVE-2025-11116 published to NVD
• 2025-10-23 - Last updated in NVD database

Technical Details for CVE-2025-11116

Vulnerability Analysis

This vulnerability represents a classic SQL Injection flaw classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The affected application fails to properly sanitize user-supplied input in the faculty parameter before incorporating it into SQL queries executed against the backend database.

The vulnerability is accessible over the network without requiring authentication or user interaction, making it particularly concerning for deployments exposed to the internet. The exploit has been publicly disclosed, increasing the risk of exploitation by malicious actors.

Root Cause

The root cause of this vulnerability is inadequate input validation and the absence of parameterized queries or prepared statements in the /add.home.php file. When user input from the faculty parameter is directly concatenated into SQL queries without proper escaping or sanitization, attackers can manipulate the query structure to execute arbitrary SQL commands.

The CVE description also notes that other parameters in the same file might be affected by similar injection flaws, indicating a systemic lack of input validation throughout the affected component.

Attack Vector

The attack can be executed remotely over the network by sending specially crafted HTTP requests to the vulnerable /add.home.php endpoint. An attacker would inject malicious SQL syntax through the faculty parameter, which could include:

• Union-based injection to extract data from other tables
• Boolean-based blind injection to infer database contents
• Time-based blind injection for stealthier data extraction
• Stacked queries to execute multiple SQL statements

The vulnerability is described as having low attack complexity, requiring no privileges or user interaction to exploit. Additional technical details and proof-of-concept information are available through the GitHub CVE Issue #42 and VulDB #326197.

Detection Methods for CVE-2025-11116

Indicators of Compromise

• Unusual SQL error messages in application logs containing syntax errors or database-specific errors
• HTTP requests to /add.home.php containing SQL keywords such as UNION, SELECT, OR 1=1, or comment sequences like -- or /*
• Unexpected database query patterns or unauthorized data access in database audit logs
• Increased response times from the application that may indicate time-based SQL injection attempts

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the faculty parameter
• Monitor HTTP access logs for requests to /add.home.php with suspicious payloads containing SQL metacharacters
• Deploy database activity monitoring to detect anomalous query patterns or unauthorized data extraction attempts
• Enable application-level logging to capture all input to the vulnerable endpoint for forensic analysis

Monitoring Recommendations

• Configure alerts for SQL syntax errors in application and database logs that may indicate injection attempts
• Implement real-time monitoring of requests to the /add.home.php endpoint with pattern matching for injection payloads
• Review database query logs for statements containing unexpected commands or accessing tables outside normal application scope
• Monitor network traffic for data exfiltration patterns that could indicate successful exploitation

How to Mitigate CVE-2025-11116

Immediate Actions Required

• Restrict access to the /add.home.php endpoint until a patch is available or the vulnerability is remediated
• Implement input validation on the faculty parameter to allow only expected characters (e.g., alphanumeric only)
• Deploy a Web Application Firewall with SQL injection protection rules to filter malicious requests
• Review application logs for signs of prior exploitation attempts

Patch Information

At the time of this analysis, no official patch has been released by the vendor for this vulnerability. Organizations using the affected Simple Scheduling System should contact the vendor through the Code Projects Resource Hub for remediation guidance.

For detailed technical information about this vulnerability, refer to the VulDB CTI ID #326197 or the VulDB Submission #662701.

Workarounds

• Implement parameterized queries or prepared statements in the affected /add.home.php file if source code modifications are possible
• Use server-side input validation to sanitize all user-supplied input, particularly the faculty parameter and any other identified parameters
• Restrict database user permissions to limit the impact of successful injection attacks using principle of least privilege
• Place the application behind a reverse proxy with SQL injection filtering capabilities
• Consider disabling the scheduling system or the specific vulnerable functionality until proper remediation can be implemented