CVE-2025-11588 identifies a SQL injection vulnerability in CodeAstro Gym Management System version 1.0, specifically within the /customer/index.php file where the 'fullname' parameter is improperly sanitized. This allows an attacker to inject malicious SQL code remotely without requiring authentication or user interaction, exploiting the system's database queries. The vulnerability arises from insufficient input validation and lack of use of parameterized queries or prepared statements, enabling attackers to manipulate backend SQL commands. Potential consequences include unauthorized data retrieval, modification, or deletion, which can compromise customer data confidentiality and system integrity. The CVSS 4.0 base score of 5.3 reflects a medium severity, considering the attack vector is network-based, with low complexity and no privileges or user interaction needed, but with limited impact on confidentiality, integrity, and availability. Although no known exploits are currently active in the wild, the public availability of exploit code increases the risk of future attacks. The vulnerability affects only version 1.0 of the product, and no official patches have been published yet. Organizations using this system should urgently review their exposure and implement mitigations to prevent exploitation.

For European organizations, the impact of this vulnerability can be significant, particularly for fitness centers and gyms that rely on CodeAstro Gym Management System 1.0 to manage customer data. Exploitation could lead to unauthorized access to personal and payment information, violating data protection regulations such as GDPR, potentially resulting in legal penalties and reputational damage. Data integrity could be compromised, affecting membership records and billing accuracy, disrupting business operations. Availability impacts may arise if attackers execute destructive SQL commands, causing service outages. The medium severity rating suggests a moderate risk, but the ease of remote exploitation without authentication elevates the urgency. Organizations in Europe with large customer bases or interconnected systems may face cascading effects if attackers leverage this vulnerability as a foothold for broader network compromise.

Immediate mitigation steps include implementing strict input validation and sanitization on the 'fullname' parameter and any other user inputs to prevent injection of malicious SQL code. Employ parameterized queries or prepared statements throughout the application to eliminate direct concatenation of user inputs into SQL commands. Conduct a thorough code review of the entire application to identify and remediate similar vulnerabilities. Monitor network traffic and application logs for suspicious activities indicative of SQL injection attempts. Restrict database user permissions to the minimum necessary to limit potential damage from exploitation. Since no official patches are currently available, consider isolating or temporarily disabling the vulnerable module if feasible. Engage with the vendor for timely patch releases and apply updates promptly once available. Additionally, implement Web Application Firewalls (WAFs) with SQL injection detection rules to provide an additional layer of defense.