CVE-2025-6315 is a SQL Injection vulnerability identified in version 1.0 of the code-projects Online Shoe Store application, specifically within the /cart2.php file. The vulnerability arises due to improper sanitization or validation of the 'ID' parameter, which can be manipulated by an attacker to inject malicious SQL queries. This flaw allows remote attackers to execute arbitrary SQL commands on the backend database without requiring any authentication or user interaction. The vulnerability is classified as critical by the vendor, although the CVSS 4.0 score is 6.9 (medium severity), reflecting a balance between ease of exploitation and the potential impact. The CVSS vector indicates the attack can be performed remotely (AV:N), with low attack complexity (AC:L), no privileges or user interaction required (PR:N/UI:N), and partial impact on confidentiality, integrity, and availability (VC:L/VI:L/VA:L). Exploiting this vulnerability could lead to unauthorized data disclosure, data modification, or disruption of service. While no public exploits are currently known in the wild, the vulnerability details have been disclosed, increasing the risk of exploitation by opportunistic attackers. The absence of patches or mitigation links suggests that organizations using this software version must proactively implement protective measures or upgrade once a fix is available.

For European organizations using the code-projects Online Shoe Store 1.0, this vulnerability poses significant risks. Exploitation could lead to unauthorized access to sensitive customer data, including personal and payment information, resulting in data breaches and regulatory non-compliance under GDPR. Integrity of order and inventory data could be compromised, leading to financial losses and operational disruptions. Availability impacts could manifest as denial of service or corrupted shopping cart functionality, degrading customer experience and trust. Given the remote and unauthenticated nature of the exploit, attackers can target these systems at scale, potentially affecting multiple businesses. The impact is particularly critical for e-commerce platforms with high transaction volumes or those integrated with other enterprise systems. Additionally, reputational damage and legal consequences from data breaches could be severe for affected European companies.

Since no official patches are currently available, European organizations should implement immediate compensating controls. These include: 1) Applying Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the 'ID' parameter in /cart2.php; 2) Conducting thorough input validation and sanitization on all user-supplied parameters, especially the 'ID' argument, using parameterized queries or prepared statements if possible; 3) Restricting database user permissions to the minimum necessary to limit the impact of a successful injection; 4) Monitoring application logs and database queries for anomalous activities indicative of injection attempts; 5) Isolating the affected application environment to reduce lateral movement risk; 6) Planning and prioritizing an upgrade or patch deployment as soon as the vendor releases a fix; 7) Educating development and security teams about secure coding practices to prevent similar vulnerabilities in future releases. These targeted measures go beyond generic advice by focusing on the specific vulnerable parameter and the application context.