CVE-2025-15243 is a SQL injection vulnerability identified in version 1.0 of the Simple Stock System developed by code-projects. The vulnerability resides in the /market/login.php script, where the Username parameter is not properly sanitized before being incorporated into SQL queries. This lack of input validation allows an attacker to inject malicious SQL code remotely, without requiring authentication or user interaction. The injection can manipulate backend database queries, potentially enabling unauthorized access to sensitive data, alteration of database contents, or disruption of service. The vulnerability has a CVSS 4.0 score of 6.9, indicating a medium severity level, with an attack vector that is network-based and requires no privileges or user interaction. The impact on confidentiality, integrity, and availability is limited but non-negligible, as the attacker can partially compromise these aspects by exploiting the injection. Although no active exploitation has been reported, the public availability of exploit code increases the likelihood of attacks. The vulnerability affects only version 1.0 of the Simple Stock System, which is a niche inventory management application. No official patches have been linked yet, so mitigation relies on secure coding practices and defensive controls.

The SQL injection vulnerability in Simple Stock System 1.0 can lead to unauthorized disclosure of sensitive information stored in the backend database, such as user credentials or stock data. Attackers may also alter or delete data, undermining data integrity and potentially causing operational disruptions. Availability could be affected if injected queries cause database errors or crashes. Since the vulnerability requires no authentication and can be exploited remotely, it poses a significant risk to any organization using this software, especially those managing critical inventory or stock data. The medium severity rating reflects a moderate impact, but the presence of published exploit code elevates the urgency for remediation. Organizations could face data breaches, financial losses, and reputational damage if exploited. The scope is limited to installations of this specific software version, but similar vulnerabilities in comparable systems could compound risks.

To mitigate CVE-2025-15243, organizations should immediately implement input validation and sanitization on all user-supplied data, especially the Username parameter in /market/login.php. Employing parameterized queries or prepared statements will effectively prevent SQL injection by separating code from data. Restrict database user permissions to the minimum necessary to limit the impact of any successful injection. If an official patch becomes available from code-projects, it should be applied promptly. In the absence of a patch, consider deploying Web Application Firewalls (WAFs) with rules to detect and block SQL injection attempts targeting the login endpoint. Regularly audit logs for suspicious login attempts or unusual database errors. Additionally, conduct security code reviews and penetration testing to identify and remediate similar injection flaws elsewhere in the application. Educate developers on secure coding practices to prevent future vulnerabilities.