CVE-2025-6331 is a SQL Injection vulnerability identified in version 1.0 of the PHPGurukul Directory Management System, specifically within the /admin/search-directory.php file. The vulnerability arises from improper sanitization or validation of the 'searchdata' parameter, which is used in SQL queries. An attacker can manipulate this parameter remotely without authentication or user interaction, injecting malicious SQL code that could alter the intended database queries. This can lead to unauthorized data access, modification, or deletion, potentially compromising the confidentiality, integrity, and availability of the underlying database. The vulnerability has a CVSS 4.0 base score of 5.3, indicating a medium severity level, with an attack vector of network (remote), low attack complexity, no privileges required, and no user interaction. The impact on confidentiality, integrity, and availability is rated low, suggesting limited but non-negligible damage potential. Although no public exploits are currently known in the wild, the exploit details have been disclosed, increasing the risk of future exploitation. No official patches or mitigation links have been provided yet, which means affected organizations must rely on alternative protective measures until a fix is released.

For European organizations using PHPGurukul Directory Management System 1.0, this vulnerability poses a moderate risk. Exploitation could allow attackers to access sensitive directory data, potentially exposing personal or organizational information. This could lead to data breaches, reputational damage, and compliance violations under regulations such as GDPR. The ability to modify or delete data could disrupt directory services, impacting business operations. Since the vulnerability requires no authentication and can be exploited remotely, attackers can target exposed administrative interfaces over the internet. However, the limited impact ratings on confidentiality, integrity, and availability suggest that the damage may be contained if the database privileges are properly restricted. Organizations with critical directory data or integrated systems relying on this product are at higher risk of operational disruption or data leakage.

Immediately restrict access to the /admin/search-directory.php endpoint by implementing network-level controls such as IP whitelisting or VPN access to limit exposure to trusted administrators only. Apply input validation and sanitization on the 'searchdata' parameter to prevent injection of malicious SQL code. Use parameterized queries or prepared statements in the application code. Monitor web server and database logs for unusual or suspicious query patterns targeting the search-directory functionality to detect potential exploitation attempts. If possible, disable or remove the vulnerable search functionality until a vendor patch or update is available. Conduct a thorough security review of all input handling in the application to identify and remediate similar injection risks. Implement web application firewall (WAF) rules specifically designed to detect and block SQL injection attempts targeting this parameter and endpoint. Ensure database user accounts used by the application have the least privileges necessary to limit the impact of any successful injection. Regularly back up directory data and test restoration procedures to minimize downtime and data loss in case of exploitation.