CVE-2025-10109 is a SQL Injection vulnerability identified in version 1.0 of the Campcodes Online Loan Management System. The vulnerability resides in the processing of the /ajax.php endpoint, specifically when handling requests with the action parameter set to 'delete_payment'. By manipulating the 'ID' argument in this request, an attacker can inject malicious SQL code. This flaw allows an unauthenticated remote attacker to execute arbitrary SQL commands on the backend database without requiring user interaction. The vulnerability is due to insufficient input validation or sanitization of the 'ID' parameter, enabling direct injection of SQL statements. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, low complexity, no privileges or user interaction needed, but limited impact on confidentiality, integrity, and availability. Although no public exploits are currently known in the wild, the vulnerability has been publicly disclosed, increasing the risk of exploitation. The affected product is a loan management system, which typically handles sensitive financial and personal data, making the potential consequences significant if exploited. The lack of available patches or mitigations from the vendor at this time increases the urgency for organizations to implement compensating controls.

For European organizations using Campcodes Online Loan Management System 1.0, this vulnerability poses a substantial risk to the confidentiality and integrity of sensitive financial data, including loan payment records and customer information. Successful exploitation could allow attackers to extract, modify, or delete critical data, potentially leading to financial fraud, identity theft, or disruption of loan processing operations. Given the nature of loan management systems, data breaches could also result in regulatory non-compliance under GDPR, leading to legal penalties and reputational damage. The remote, unauthenticated nature of the attack vector means that attackers can exploit this vulnerability without prior access, increasing the likelihood of compromise. The medium severity rating suggests that while the impact is significant, it may not lead to full system takeover or widespread availability disruption. However, the strategic importance of financial institutions and loan service providers in Europe amplifies the potential operational and economic impacts.

Since no official patches are currently available, European organizations should immediately implement the following mitigations: 1) Apply strict input validation and sanitization on all parameters, especially the 'ID' parameter in /ajax.php requests, using allowlists and parameterized queries where possible. 2) Employ Web Application Firewalls (WAFs) configured to detect and block SQL injection patterns targeting the vulnerable endpoint. 3) Restrict access to the /ajax.php endpoint by IP whitelisting or network segmentation to limit exposure. 4) Monitor logs for suspicious activity related to 'delete_payment' actions and anomalous SQL errors. 5) Conduct code reviews and penetration testing focused on injection flaws in the loan management system. 6) Plan for an urgent update or migration to a patched version once available from the vendor. 7) Educate staff about the risks and signs of exploitation attempts to improve incident response readiness.