CVE-2025-7604 is a critical SQL Injection vulnerability identified in version 4.0 of the PHPGurukul Hospital Management System (HMS). The vulnerability exists in the /user-login.php file, specifically in the handling of the 'Username' parameter. An attacker can remotely exploit this flaw by manipulating the Username input to inject malicious SQL code. This allows unauthorized access to the underlying database, potentially enabling attackers to extract sensitive patient and hospital data, modify records, or escalate privileges within the system. The vulnerability requires no authentication or user interaction, making it highly accessible for remote exploitation. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the vulnerability's ease of exploitation (network attack vector, low attack complexity, no privileges or user interaction required) but with limited impact on confidentiality, integrity, and availability (low to limited impact). No official patch has been published yet, and while no known exploits are currently reported in the wild, the public disclosure of the exploit code increases the risk of active exploitation. Given the critical nature of hospital management systems in handling sensitive health data and operational workflows, this vulnerability poses a significant threat to healthcare providers using PHPGurukul HMS 4.0.

For European organizations, particularly hospitals and healthcare providers using PHPGurukul HMS 4.0, this vulnerability could lead to severe data breaches involving patient personal and medical information, violating GDPR and other data protection regulations. Unauthorized database access could disrupt hospital operations, compromise patient safety, and damage organizational reputation. The ability to manipulate login credentials or escalate privileges could allow attackers to gain persistent access, further endangering system integrity and availability. Given the critical role of hospital management systems in patient care, exploitation could also indirectly impact healthcare delivery and emergency response. The medium CVSS score suggests a moderate but tangible risk, especially as healthcare data is a high-value target for cybercriminals and ransomware groups. European healthcare institutions must consider this vulnerability a priority due to the sensitive nature of the data and the potential regulatory and operational consequences.

Immediate mitigation steps include implementing strict input validation and parameterized queries or prepared statements in the /user-login.php script to prevent SQL injection. Organizations should conduct a thorough code review of the login module and related database interactions to identify and remediate similar vulnerabilities. Until an official patch is released by PHPGurukul, deploying Web Application Firewalls (WAFs) with SQL injection detection and prevention rules can help block exploitation attempts. Monitoring login activity for unusual patterns and implementing multi-factor authentication (MFA) can reduce the risk of unauthorized access. Regular backups of the database and system configurations should be maintained to enable recovery in case of compromise. Additionally, healthcare providers should engage with PHPGurukul support channels to obtain updates or patches promptly and consider isolating or restricting network access to the affected HMS instance to trusted internal networks only.