CVE-2021-38730 is a critical SQL Injection vulnerability affecting SEMCMS SHOP version 1.1, specifically via the Ant_Info.php script. SQL Injection (CWE-89) vulnerabilities occur when untrusted input is improperly sanitized and directly included in SQL queries, allowing attackers to manipulate backend databases. In this case, the vulnerability allows an unauthenticated attacker to send crafted requests to Ant_Info.php, injecting malicious SQL code. The CVSS 3.1 base score of 9.8 indicates a critical severity with network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). Exploiting this vulnerability could enable attackers to extract sensitive data, modify or delete database contents, or disrupt service availability. Although no public exploits are currently known in the wild and no vendor patches have been linked, the high severity and ease of exploitation make this a significant threat. The lack of detailed vendor or product information beyond SEMCMS SHOP v1.1 limits precise attribution, but the vulnerability clearly impacts web applications relying on this software component. Organizations using SEMCMS SHOP v1.1 should urgently assess exposure and implement mitigations to prevent exploitation.

For European organizations, this vulnerability poses a substantial risk, particularly for e-commerce platforms or online shops utilizing SEMCMS SHOP v1.1. Successful exploitation could lead to unauthorized disclosure of customer data, including personal and payment information, violating GDPR requirements and potentially resulting in regulatory penalties. Data integrity could be compromised, affecting order processing, inventory management, and financial records, leading to operational disruptions and financial losses. Availability impacts could cause downtime, damaging customer trust and brand reputation. Given the critical severity and unauthenticated remote exploitation vector, attackers could leverage this vulnerability to launch large-scale data breaches or ransomware attacks. The absence of known public exploits provides a limited window for proactive defense, but the high CVSS score underscores the urgency for European entities to prioritize remediation and monitoring.

1. Immediate mitigation should include applying any available patches or updates from the SEMCMS SHOP vendor once released. 2. In the absence of patches, implement Web Application Firewall (WAF) rules specifically designed to detect and block SQL injection attempts targeting Ant_Info.php and related endpoints. 3. Conduct thorough input validation and sanitization on all user-supplied data, employing parameterized queries or prepared statements to prevent injection. 4. Restrict database user permissions to the minimum necessary, limiting the impact of potential exploitation. 5. Monitor web server and database logs for unusual query patterns or repeated failed requests to Ant_Info.php. 6. Perform a comprehensive security audit of the SEMCMS SHOP deployment to identify other potential vulnerabilities. 7. Educate development and operations teams about secure coding practices and the risks of SQL injection. 8. Consider isolating or temporarily disabling vulnerable components if immediate patching is not feasible to reduce attack surface.