CVE-2026-0605 is a SQL injection vulnerability identified in the code-projects Online Music Site version 1.0, specifically affecting the /login.php endpoint. The vulnerability arises from improper sanitization of user-supplied input in the username and password parameters, allowing attackers to inject malicious SQL code. This injection can be performed remotely without requiring authentication or user interaction, making it relatively easy to exploit. The vulnerability can lead to unauthorized access to the backend database, potentially exposing sensitive user credentials or other stored data, modifying database contents, or causing denial of service through database corruption or query manipulation. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no public exploits are currently known in the wild, the vulnerability has been publicly disclosed, increasing the risk of exploitation. The lack of available patches or vendor advisories means organizations must implement their own mitigations. The vulnerability is critical for any deployment of this software, especially where sensitive user data is processed or stored. The attack surface is limited to the login functionality, but given the centrality of authentication, the impact can be significant. The vulnerability underscores the importance of secure coding practices such as input validation and use of parameterized queries to prevent SQL injection.

For European organizations using the affected Online Music Site 1.0, this vulnerability poses a risk of unauthorized data access, including user credentials and potentially other sensitive information stored in the backend database. This can lead to data breaches, loss of customer trust, and regulatory penalties under GDPR for inadequate protection of personal data. Integrity of the database could be compromised, allowing attackers to alter or delete data, which may disrupt business operations or corrupt user accounts. Availability may also be affected if attackers execute queries that degrade database performance or cause service outages. Given the remote exploitability without authentication, attackers can target these systems at scale. The impact is particularly concerning for organizations in the digital media and entertainment sectors, which often handle large volumes of user data and intellectual property. Additionally, the public disclosure of the vulnerability increases the likelihood of exploitation attempts. Organizations may face reputational damage and financial losses if exploited. The medium severity rating suggests that while the vulnerability is serious, it does not allow full system compromise or widespread lateral movement on its own, but it can be a stepping stone for further attacks.

To mitigate CVE-2026-0605, organizations should immediately review and update the /login.php code to implement strict input validation and sanitization for all user-supplied parameters, especially username and password fields. Employ parameterized queries or prepared statements to prevent SQL injection attacks effectively. If updating the code is not immediately feasible, consider deploying a Web Application Firewall (WAF) with custom rules to detect and block SQL injection patterns targeting the login endpoint. Conduct thorough code audits and penetration testing focused on injection vulnerabilities. Monitor logs for suspicious login attempts or unusual database query patterns. Segregate the database with least privilege access controls to limit the potential damage if an injection occurs. Regularly back up databases to enable recovery in case of data corruption. Engage with the vendor or community to obtain patches or updates as they become available. Educate developers on secure coding practices to prevent similar vulnerabilities in future releases. Finally, ensure compliance with GDPR by documenting mitigation efforts and breach response plans.