CVE-2025-11514 is a SQL injection vulnerability identified in version 1.0 of the code-projects Online Complaint Site, specifically within the /cms/users/index.php file. The vulnerability arises from improper sanitization of the Username parameter, allowing attackers to inject malicious SQL code remotely without requiring authentication or user interaction. This injection flaw can enable attackers to manipulate backend database queries, potentially leading to unauthorized data retrieval, modification, or deletion. The vulnerability has a CVSS 4.0 base score of 5.3, indicating a medium severity level, with an attack vector of network (remote), low attack complexity, no privileges required, and no user interaction needed. The impact covers confidentiality, integrity, and availability, albeit at a low level per vector metrics. Although no known exploits are currently active in the wild, a public exploit exists, increasing the risk of exploitation by opportunistic attackers. The lack of patches or vendor advisories at this time means organizations must proactively implement mitigations. The vulnerability is particularly concerning for organizations relying on this complaint management platform to handle sensitive user data, as exploitation could lead to data breaches or service disruptions.

For European organizations, the exploitation of this SQL injection vulnerability could result in unauthorized access to sensitive complaint data, including personal information of users, which may violate GDPR and other data protection regulations. Data integrity could be compromised if attackers modify or delete complaint records, undermining trust in complaint handling processes. Availability of the complaint management service could be disrupted through SQL injection-based denial of service attacks. Public sector entities and customer service departments using this software are at higher risk due to the nature of their data and the criticality of complaint management. The presence of a public exploit increases the likelihood of opportunistic attacks, potentially leading to reputational damage, regulatory fines, and operational disruptions. Given the medium severity, the impact is significant but not catastrophic, provided timely mitigation is applied.

European organizations should immediately audit their use of the code-projects Online Complaint Site version 1.0 and assess exposure of the /cms/users/index.php endpoint. Specific mitigations include: 1) Implement strict input validation and sanitization on the Username parameter to block malicious SQL syntax. 2) Refactor database queries to use parameterized statements or prepared queries to prevent injection. 3) Restrict database user permissions to the minimum necessary to limit damage from potential exploitation. 4) Monitor web server and database logs for suspicious query patterns indicative of SQL injection attempts. 5) Employ web application firewalls (WAFs) with SQL injection detection rules tailored to this vulnerability. 6) If possible, upgrade to a patched or newer version of the software once available. 7) Conduct security awareness training for developers and administrators on secure coding and vulnerability management. 8) Regularly back up complaint data and test restoration procedures to mitigate impact of data tampering or loss.