CVE-2025-65379 identifies a critical SQL Injection vulnerability in PHPGurukul Billing System version 1.0, specifically targeting the /admin/password-recovery.php endpoint. The vulnerability stems from the lack of input validation on the username and mobileno parameters, which are directly concatenated into SQL queries without sanitization or use of prepared statements. This allows an attacker to inject malicious SQL code, potentially enabling unauthorized access to sensitive data, modification or deletion of database records, or even complete compromise of the backend database. The vulnerability does not require authentication or user interaction, increasing its risk profile. While no public exploits have been reported yet, the nature of SQL Injection vulnerabilities makes them attractive targets for attackers due to their potential to bypass authentication and extract confidential information. The absence of a CVSS score suggests this is a newly disclosed vulnerability, but the technical details indicate a high-risk issue. The vulnerability affects all installations of PHPGurukul Billing System 1.0 that have not implemented custom mitigations or patches. Given the critical role billing systems play in financial and operational workflows, exploitation could lead to significant business disruption and data breaches.

For European organizations, exploitation of this vulnerability could result in unauthorized disclosure of customer and financial data, manipulation of billing records, and potential disruption of billing operations. This could lead to financial losses, regulatory penalties under GDPR for data breaches, and reputational damage. Organizations in sectors such as finance, retail, and utilities that rely on PHPGurukul Billing System 1.0 are particularly at risk. The ability to execute arbitrary SQL commands without authentication increases the likelihood of widespread impact if attackers target multiple organizations. Additionally, attackers could leverage this vulnerability as a foothold for further network compromise. The lack of known exploits currently provides a window for proactive mitigation, but the risk remains high due to the ease of exploitation and sensitive nature of the affected system.

Organizations should immediately audit their use of PHPGurukul Billing System 1.0 and restrict access to the /admin/password-recovery.php endpoint to trusted administrators only. Implement input validation and sanitization on the username and mobileno parameters, ensuring that only expected input formats are accepted. Refactor the backend code to use parameterized queries or prepared statements to prevent SQL Injection. If possible, apply any vendor patches or updates addressing this vulnerability once available. Conduct thorough security testing, including automated SQL Injection scans and manual code reviews, to identify and remediate similar issues. Monitor logs for suspicious activity targeting the password recovery endpoint. Additionally, implement network-level protections such as web application firewalls (WAFs) with rules to detect and block SQL Injection attempts. Educate development teams on secure coding practices to prevent recurrence.