CVE-2025-4301 is a SQL Injection vulnerability identified in version 1.0 of the itsourcecode Content Management System (CMS). The vulnerability exists in the /search-notice.php file, specifically in the handling of the 'searchdata' parameter. An attacker can remotely exploit this flaw by manipulating the 'searchdata' argument to inject malicious SQL code. This injection can lead to unauthorized access or modification of the backend database, potentially exposing sensitive data or allowing further compromise of the CMS. The vulnerability requires no authentication or user interaction, making it accessible to any remote attacker. The CVSS 4.0 base score is 6.9, categorized as medium severity, reflecting the network attack vector, low complexity, and no privileges or user interaction required. The impact on confidentiality, integrity, and availability is rated low to medium, indicating limited but non-negligible consequences. No public exploits are currently known to be actively used in the wild, and no patches have been officially released yet. However, the public disclosure of the vulnerability increases the risk of exploitation attempts.

For European organizations using itsourcecode CMS version 1.0, this vulnerability poses a risk of unauthorized data access or manipulation through SQL injection attacks. The potential impact includes leakage of sensitive information stored in the CMS database, such as user data, content, or configuration details. Attackers could also alter or delete data, disrupting website functionality and damaging organizational reputation. Given the remote exploitability without authentication, attackers could target vulnerable systems at scale. Organizations in sectors with strict data protection regulations, such as GDPR, may face compliance issues and legal consequences if sensitive data is compromised. Additionally, compromised CMS instances could serve as footholds for further network intrusion or malware deployment, amplifying the threat. The absence of known active exploits currently reduces immediate risk but does not eliminate it, especially as exploit code may emerge following public disclosure.

European organizations should immediately audit their web infrastructure to identify any deployments of itsourcecode CMS version 1.0. Given the lack of an official patch, organizations should implement the following specific mitigations: 1) Apply Web Application Firewall (WAF) rules tailored to detect and block SQL injection attempts targeting the 'searchdata' parameter in /search-notice.php. 2) Conduct input validation and sanitization on all user-supplied data, particularly the 'searchdata' parameter, to prevent injection of malicious SQL code. 3) Restrict database user permissions to the minimum necessary, limiting the potential damage from successful injection. 4) Monitor web server and database logs for unusual query patterns or errors indicative of injection attempts. 5) If feasible, isolate the CMS environment from critical internal networks to contain potential breaches. 6) Engage with the vendor or community to obtain or develop patches or updates addressing this vulnerability. 7) Plan for an upgrade to a more secure CMS version or alternative platform once a fix is available. These steps go beyond generic advice by focusing on the specific vulnerable parameter and file, emphasizing proactive detection and containment.