CVE-2025-15410 is a SQL injection vulnerability identified in the code-projects Online Guitar Store version 1.0, specifically within the /login.php script. The vulnerability arises from improper sanitization of the L_email parameter, which is used in SQL queries without adequate input validation or parameterization. This allows an unauthenticated remote attacker to inject arbitrary SQL commands, potentially leading to unauthorized data access, modification, or deletion within the backend database. The vulnerability does not require user interaction or authentication, increasing its exploitability. The CVSS 4.0 score of 6.9 reflects a medium severity, considering the attack vector is network-based with low complexity and no privileges required, but with limited impact on confidentiality, integrity, and availability (low to limited impact). No known exploits are currently active in the wild, but a public exploit is available, which could facilitate attacks. The vulnerability affects only version 1.0 of the product, which is an online e-commerce platform for guitar sales. The lack of patches or vendor-provided fixes at this time increases the urgency for organizations to implement mitigations. The vulnerability could be exploited to extract sensitive user credentials or manipulate user authentication processes, potentially leading to account compromise or data leakage.

For European organizations using the code-projects Online Guitar Store 1.0 or similar vulnerable e-commerce platforms, this vulnerability poses a significant risk to the confidentiality and integrity of customer data, including login credentials and possibly payment information. Exploitation could lead to unauthorized access to user accounts, data breaches, and potential manipulation or deletion of critical business data. This could result in reputational damage, regulatory penalties under GDPR for data protection failures, and financial losses. The availability impact is limited but could occur if attackers execute destructive SQL commands. Since the vulnerability is remotely exploitable without authentication, it increases the attack surface for malicious actors targeting European online retailers or small businesses using this software. The medium severity rating suggests the threat is serious but not critical, yet the presence of a public exploit increases urgency for mitigation.

1. Immediately implement input validation and sanitization for the L_email parameter in /login.php to prevent SQL injection. 2. Refactor the code to use parameterized queries or prepared statements rather than concatenating user input directly into SQL commands. 3. Restrict access to the /login.php endpoint via web application firewalls (WAFs) with rules to detect and block SQL injection patterns. 4. Monitor logs for suspicious activity targeting the L_email parameter or unusual SQL errors. 5. If possible, upgrade to a patched version once available or apply vendor-provided fixes. 6. Conduct a thorough security audit of the entire application to identify and remediate similar injection flaws. 7. Educate developers on secure coding practices to prevent future injection vulnerabilities. 8. Implement multi-factor authentication to reduce the impact of compromised credentials. 9. Regularly back up databases and test restoration procedures to mitigate potential data loss. 10. Engage in threat intelligence sharing with industry peers to stay informed about emerging exploits.