CVE-2025-12256 identifies a SQL injection vulnerability in the code-projects Online Event Judging System version 1.0, specifically in the /edit_contestant.php script. The vulnerability arises from improper sanitization of the contestant_id parameter, allowing an attacker to inject malicious SQL code remotely. This can lead to unauthorized data access, modification, or deletion within the backend database. The vulnerability does not require authentication or user interaction, which increases its risk profile. The CVSS 4.0 base score is 5.3 (medium), reflecting the network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact on confidentiality, integrity, and availability is limited but present, as the attacker can partially compromise these aspects by manipulating database queries. Although no exploits have been observed in the wild, the availability of proof-of-concept code raises the likelihood of future attacks. The vulnerability affects only version 1.0 of the product, and no official patches have been published yet. The Online Event Judging System is used to manage and score participants in events, making the integrity and confidentiality of contestant data critical. Attackers exploiting this flaw could alter scores, access sensitive participant information, or disrupt event operations.

For European organizations, the exploitation of this SQL injection vulnerability could lead to unauthorized access to sensitive contestant data, including personal information and event scores, potentially violating GDPR and other data protection regulations. Integrity of event results could be compromised, undermining trust in event outcomes and causing reputational damage. Availability impacts, while limited, could disrupt event management processes, especially during live or time-sensitive judging. Organizations relying on this system for official or large-scale events may face operational disruptions and legal consequences if data breaches occur. The medium severity suggests moderate risk, but the ease of remote exploitation without authentication increases urgency. The lack of patches means organizations must rely on mitigations until an official fix is released. The impact is more pronounced for entities managing high-profile or regulated events where data integrity and confidentiality are paramount.

Organizations should immediately implement input validation and sanitization on the contestant_id parameter to prevent injection of malicious SQL code. Employing parameterized queries or prepared statements in the /edit_contestant.php script is critical to eliminate injection vectors. Restricting access to the vulnerable endpoint via network controls or web application firewalls (WAFs) can reduce exposure. Monitoring logs for unusual database query patterns or repeated access attempts to /edit_contestant.php can help detect exploitation attempts early. Until an official patch is available, consider isolating the Online Event Judging System from public networks or limiting access to trusted IP addresses. Conduct a thorough code review of the application to identify and remediate any other potential injection points. Additionally, ensure regular backups of the database to enable recovery in case of data tampering or loss. Finally, maintain awareness of vendor updates and apply patches promptly once released.