CVE-2025-6155 is a critical SQL Injection vulnerability identified in version 1.0 of the PHPGurukul Hostel Management System, specifically within an unknown function in the /includes/login-hm.inc.php file. The vulnerability arises from improper sanitization or validation of the 'Username' parameter, which can be manipulated by an attacker to inject malicious SQL code. This injection flaw allows remote attackers to execute arbitrary SQL commands on the backend database without requiring authentication or user interaction. The vulnerability can lead to unauthorized data access, data modification, or even complete compromise of the database's integrity and confidentiality. The CVSS 4.0 base score is 6.9, indicating a medium severity level, with attack vector being network-based, no privileges or user interaction required, and partial impact on confidentiality, integrity, and availability. Although no public exploits have been reported in the wild yet, the exploit details have been disclosed publicly, increasing the risk of exploitation. The vulnerability affects only version 1.0 of the PHPGurukul Hostel Management System, a niche product used primarily in educational institutions for managing hostel accommodations and related administrative tasks.

For European organizations, especially educational institutions such as universities and colleges that use the PHPGurukul Hostel Management System, this vulnerability poses a significant risk. Exploitation could lead to unauthorized access to sensitive student and staff data, including personal identification information, accommodation details, and potentially financial records. This could result in data breaches violating GDPR regulations, leading to legal penalties and reputational damage. Furthermore, attackers could manipulate or delete records, disrupting hostel management operations and causing administrative chaos. Given the remote exploitability without authentication, attackers could target these systems en masse, potentially impacting multiple institutions simultaneously. The medium CVSS score reflects partial but meaningful impacts on confidentiality, integrity, and availability, which could cascade into operational disruptions and compliance issues.

1. Immediate patching: Organizations should verify if updates or patches are available from PHPGurukul and apply them promptly. If no official patch exists, consider temporary mitigations such as input validation and parameterized queries to prevent SQL injection. 2. Input sanitization: Implement strict server-side validation and sanitization of all user inputs, especially the 'Username' parameter in login modules. 3. Web application firewall (WAF): Deploy or update WAF rules to detect and block SQL injection attempts targeting the vulnerable endpoint. 4. Access controls: Restrict network access to the Hostel Management System to trusted internal networks or VPNs to reduce exposure. 5. Monitoring and logging: Enable detailed logging of login attempts and database queries to detect anomalous activities indicative of exploitation attempts. 6. Incident response readiness: Prepare to respond to potential breaches by backing up data securely and having a response plan for data compromise scenarios. 7. Vendor engagement: Engage with PHPGurukul for updates and security advisories and consider alternative solutions if the vendor does not provide timely fixes.