CVE-2025-11608 is a SQL injection vulnerability identified in the code-projects E-Banking System version 1.0, affecting the /register.php file's POST parameter handler for username and password fields. The vulnerability arises because the application fails to properly sanitize or parameterize user-supplied input before incorporating it into SQL queries. This allows an attacker to inject malicious SQL code remotely without requiring authentication or user interaction, potentially leading to unauthorized data access, modification, or deletion within the backend database. The vulnerability has a CVSS 4.0 base score of 6.9, indicating medium severity, with attack vector network (remote), low complexity, no privileges or user interaction needed, and limited impact on confidentiality, integrity, and availability. Although no known exploits are currently observed in the wild, the public disclosure increases the risk of exploitation attempts. The vulnerability affects only version 1.0 of the product, and no official patches have been linked yet. The lack of secure coding practices in input handling is the root cause, and the vulnerability is located in a critical component responsible for user registration, which is often exposed to the internet, increasing the attack surface.

For European organizations, particularly financial institutions using the code-projects E-Banking System 1.0, this vulnerability poses significant risks. Successful exploitation could lead to unauthorized access to sensitive customer data, including personal and financial information, undermining confidentiality. Attackers might manipulate or delete data, affecting data integrity and potentially disrupting banking operations, impacting availability. This could result in financial losses, regulatory penalties under GDPR for data breaches, and reputational damage. Given the banking sector's critical infrastructure status, exploitation could also have broader systemic impacts. The remote and unauthenticated nature of the attack vector increases the likelihood of exploitation, especially if organizations have not implemented compensating controls. The absence of known active exploits provides a window for mitigation, but the public disclosure necessitates urgent action.

European organizations should immediately implement strict input validation and sanitization for all user-supplied data, especially in the /register.php endpoint. Employ parameterized queries or prepared statements to prevent SQL injection. Restrict access to the registration endpoint via web application firewalls (WAFs) and implement rate limiting to reduce automated attack attempts. Conduct thorough code reviews and security testing to identify and remediate similar vulnerabilities. Monitor logs for unusual database queries or failed login attempts indicative of exploitation attempts. Segregate database privileges to limit the impact of potential SQL injection. Since no official patch is currently available, organizations should engage with the vendor for updates and consider temporary mitigations such as disabling the vulnerable registration functionality if feasible. Additionally, ensure that incident response plans are updated to address potential exploitation scenarios.