CVE-2025-4486 is a SQL Injection vulnerability identified in version 1.0 of the itsourcecode Gym Management System. The vulnerability arises from improper sanitization of the 'ID' parameter in the /ajax.php?action=delete_plan endpoint. An attacker can remotely manipulate this parameter to inject malicious SQL code, potentially altering the backend database queries executed by the application. This can lead to unauthorized data access, modification, or deletion, compromising the confidentiality, integrity, and availability of the system's data. The vulnerability does not require any authentication or user interaction, making it exploitable by any remote attacker with network access to the affected endpoint. The CVSS 4.0 score is 6.9, indicating a medium severity level, reflecting the ease of exploitation (network vector, no privileges, no user interaction) but limited impact scope (low confidentiality, integrity, and availability impact). No public exploits have been reported in the wild yet, but the vulnerability details have been disclosed publicly, increasing the risk of exploitation. The affected product is a niche Gym Management System, likely used by small to medium fitness centers to manage membership plans and related data. The vulnerability specifically targets the delete_plan functionality, which could allow attackers to delete or manipulate membership plans or related records in the database.

For European organizations using the itsourcecode Gym Management System version 1.0, this vulnerability poses a significant risk to the security of their member data and operational integrity. Exploitation could lead to unauthorized deletion or alteration of membership plans, causing service disruption and potential financial loss. Confidential member information stored in the database could be exposed or tampered with, leading to privacy violations under GDPR regulations. The disruption of gym management operations could also damage customer trust and brand reputation. Since the vulnerability is remotely exploitable without authentication, attackers could leverage it to gain a foothold in the network or pivot to other internal systems if proper network segmentation is lacking. The medium severity rating suggests that while the impact is not catastrophic, it is serious enough to warrant prompt remediation to avoid regulatory penalties and operational risks.

European organizations should immediately assess their exposure to the itsourcecode Gym Management System version 1.0 and prioritize patching or upgrading to a fixed version once available. In the absence of an official patch, organizations should implement web application firewall (WAF) rules to detect and block SQL injection attempts targeting the /ajax.php?action=delete_plan endpoint, specifically filtering suspicious input in the 'ID' parameter. Input validation and parameterized queries should be enforced in the application code to prevent injection attacks. Network segmentation should be applied to isolate the gym management system from critical internal networks. Regular database backups should be maintained to enable recovery from potential data tampering or deletion. Monitoring and logging of database and web server activity should be enhanced to detect anomalous behavior indicative of exploitation attempts. Additionally, organizations should conduct security awareness training for IT staff to recognize and respond to exploitation attempts promptly.