CVE-2026-3751 identifies a SQL injection vulnerability in SourceCodester Employee Task Management System version 1.0, specifically within the /daily-attendance-report.php script. The vulnerability arises from improper validation and sanitization of the 'Date' GET parameter, which is directly used in SQL queries. This allows an attacker with high privileges to inject arbitrary SQL commands remotely, potentially manipulating or extracting sensitive data from the backend database. The vulnerability does not require user interaction but does require the attacker to have high-level privileges, which may limit exploitation to insiders or compromised accounts. The CVSS 4.0 base score is 5.1 (medium), reflecting the moderate impact on confidentiality, integrity, and availability, and the complexity of exploitation. Although no known exploits are currently active in the wild, the public availability of exploit code increases the likelihood of future attacks. The vulnerability affects only version 1.0 of the product, and no official patches have been linked yet. Organizations using this system should consider immediate mitigation steps to prevent exploitation. The vulnerability highlights the importance of proper input validation and parameterized queries in web applications handling sensitive employee data.

The SQL injection vulnerability can allow attackers with high privileges to execute arbitrary SQL commands, potentially leading to unauthorized data access, modification, or deletion within the employee task management system's database. This can compromise the confidentiality of sensitive employee attendance and task data, impact data integrity by altering records, and affect availability if destructive queries are executed. Although exploitation requires high privileges, the presence of publicly available exploit code raises the risk of insider threats or attackers who have already gained elevated access. Organizations relying on this system for employee management may face operational disruptions, data breaches, and compliance issues. The impact is particularly significant in environments where employee data confidentiality is critical or where database integrity is essential for business operations.

To mitigate this vulnerability, organizations should immediately implement input validation and sanitization for the 'Date' parameter in /daily-attendance-report.php, preferably by using parameterized queries or prepared statements to prevent SQL injection. If possible, upgrade to a patched version of the software once available. In the absence of an official patch, apply web application firewall (WAF) rules to detect and block malicious SQL injection payloads targeting the vulnerable parameter. Restrict high privilege access to trusted users only and monitor logs for suspicious database queries or unusual activity related to the attendance report functionality. Conduct regular security assessments and code reviews to identify and remediate similar injection flaws. Additionally, enforce the principle of least privilege on database accounts used by the application to limit potential damage from exploitation.