CVE-2025-14959 identifies a SQL injection vulnerability in version 1.0 of the Simple Stock System developed by code-projects. The flaw exists in the processing of the 'Username' parameter within the /market/signup.php endpoint, where insufficient input sanitization allows malicious actors to inject SQL code remotely. This vulnerability does not require any authentication or user interaction, making it accessible to unauthenticated attackers over the network. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the vulnerability's potential to impact confidentiality, integrity, and availability at a limited scope. Exploiting this flaw could enable attackers to extract sensitive data, modify or delete records, or disrupt stock system operations. Although no exploits have been observed in the wild, the public availability of exploit code increases the risk of exploitation. The affected product is typically used by small to medium enterprises for inventory management, which may contain sensitive business and customer data. The vulnerability highlights the need for secure coding practices such as parameterized queries or prepared statements to prevent SQL injection. No official patches have been released yet, so organizations must rely on compensating controls until updates are available.

For European organizations, the impact of this vulnerability can be significant, especially for SMEs relying on the Simple Stock System for critical inventory and stock management functions. Successful exploitation could lead to unauthorized disclosure of sensitive business data, including customer information and stock levels, potentially resulting in financial loss and reputational damage. Data integrity could be compromised by unauthorized modification or deletion of records, disrupting business operations and supply chain management. Availability may also be affected if attackers execute destructive SQL commands or cause database corruption. Given the remote and unauthenticated nature of the exploit, attackers can launch attacks at scale, increasing the risk of widespread disruption. Compliance with GDPR and other data protection regulations could be jeopardized if personal data is exposed, leading to legal and financial penalties. The lack of patches necessitates immediate mitigation to reduce exposure. Organizations in sectors such as retail, manufacturing, and logistics are particularly vulnerable due to their reliance on stock management systems.

1. Immediately implement input validation and sanitization on the 'Username' parameter in /market/signup.php to reject or properly escape malicious SQL syntax. 2. Refactor the application code to use parameterized queries or prepared statements to eliminate direct SQL concatenation vulnerabilities. 3. Restrict database user permissions to the minimum necessary, preventing unauthorized data modification or access. 4. Monitor web application logs for suspicious SQL syntax patterns or unusual signup activity indicative of exploitation attempts. 5. Deploy Web Application Firewalls (WAFs) with rules targeting SQL injection patterns to provide an additional layer of defense. 6. Conduct code audits and penetration testing focused on injection vulnerabilities across the application. 7. Isolate the stock system network segment to limit exposure to external threats. 8. Prepare for patch deployment by coordinating with the vendor or development team to obtain and test fixes as soon as they become available. 9. Educate development and IT teams on secure coding practices to prevent similar vulnerabilities in future releases.