CVE-2026-1552 identifies an SQL injection vulnerability in SEMCMS version 5.0, specifically within the /SEMCMS_Info.php file. The vulnerability arises from improper sanitization of the 'searchml' parameter, which allows an attacker to inject malicious SQL code remotely without requiring authentication or user interaction. This injection can manipulate backend database queries, potentially exposing sensitive data, modifying database contents, or disrupting service availability. The CVSS 4.0 base score is 5.3, reflecting medium severity due to the low attack complexity and no need for privileges, but limited impact on confidentiality, integrity, and availability. The vendor was notified but has not responded or provided a patch, and while public exploit details are available, no active exploitation has been confirmed. The vulnerability affects only SEMCMS 5.0, a content management system whose market penetration is limited but may be critical in certain regions or sectors. The lack of vendor response increases risk, as organizations must rely on defensive measures until a fix is released.

The SQL injection vulnerability can lead to unauthorized disclosure of sensitive information stored in the database, unauthorized modification or deletion of data, and potential denial of service if database queries are disrupted. This compromises confidentiality, integrity, and availability to varying degrees. Since exploitation requires no authentication and can be performed remotely, attackers can leverage this flaw to gain footholds in affected systems, escalate privileges, or pivot to other internal resources. Organizations using SEMCMS 5.0 may face data breaches, reputational damage, regulatory penalties, and operational disruptions. The absence of a vendor patch and public exploit information increases the urgency for organizations to implement mitigations. The impact is particularly significant for organizations handling sensitive or regulated data through SEMCMS.

1. Implement strict input validation and sanitization on the 'searchml' parameter to block malicious SQL code. 2. Deploy a Web Application Firewall (WAF) with rules targeting SQL injection patterns to detect and block exploit attempts. 3. Monitor web server and database logs for unusual query patterns or repeated access to /SEMCMS_Info.php with suspicious parameters. 4. Restrict database user permissions to the minimum necessary to limit damage if exploitation occurs. 5. Isolate SEMCMS servers within segmented network zones to reduce lateral movement risk. 6. Engage with the vendor or community for updates and patches, and apply them promptly once available. 7. Consider temporary disabling or restricting access to vulnerable functionality if feasible until a patch is released. 8. Conduct regular security assessments and penetration testing focused on injection vulnerabilities. These steps go beyond generic advice by focusing on specific parameter hardening, monitoring, and network segmentation tailored to this vulnerability.