CVE-2025-3799 is a critical SQL Injection vulnerability identified in version 11 of WCMS, a web content management system. The flaw exists in an unspecified function within the file app/controllers/AnonymousController.php. Specifically, the vulnerability arises from improper sanitization or validation of user-supplied input in the email or username parameters, allowing an attacker to inject malicious SQL code. This injection can be performed remotely without authentication, increasing the attack surface significantly. The vulnerability may also affect other parameters beyond email and username, indicating a broader input validation weakness in the affected controller. Although the exact database backend is not specified, SQL Injection typically enables attackers to manipulate database queries, potentially leading to unauthorized data disclosure, data modification, or even full system compromise depending on the database privileges. The exploit has been publicly disclosed, which raises the risk of exploitation despite no confirmed active exploitation in the wild at the time of reporting. The vulnerability's classification as critical by the source contrasts with the medium severity rating provided, suggesting that the impact could be severe if exploited. The lack of available patches or vendor advisories at the time of disclosure means that affected organizations must rely on mitigation strategies until an official fix is released.

For European organizations using WCMS version 11, this vulnerability poses a significant risk to the confidentiality, integrity, and availability of their web applications and underlying data. Successful exploitation could allow attackers to extract sensitive information such as user credentials, personal data, or proprietary business information, violating GDPR and other data protection regulations prevalent in Europe. Additionally, attackers could alter or delete critical content, disrupt website operations, or escalate privileges within the system, potentially leading to broader network compromise. Given the remote and unauthenticated nature of the attack vector, threat actors could automate exploitation attempts, increasing the likelihood of widespread impact. Organizations in sectors with high regulatory scrutiny, such as finance, healthcare, and government, face heightened risks due to potential data breaches and operational disruptions. The public disclosure of the exploit code further elevates the threat landscape, as less sophisticated attackers may now attempt to leverage this vulnerability.

Immediate mitigation should focus on input validation and filtering at the application level. Organizations should implement strict whitelist validation for email and username parameters, ensuring that only properly formatted and expected input is accepted. Employing parameterized queries or prepared statements in the affected controller code is critical to prevent SQL Injection. Web Application Firewalls (WAFs) should be configured with custom rules to detect and block SQL Injection patterns targeting the vulnerable parameters. Until an official patch is available, organizations should consider temporarily disabling or restricting access to the affected AnonymousController.php endpoints if feasible. Regular monitoring of web server logs for suspicious query patterns and failed login attempts can help detect exploitation attempts early. Conducting a thorough code review of the WCMS installation to identify and remediate similar injection points is advisable. Finally, organizations should maintain up-to-date backups and have an incident response plan ready to address potential breaches resulting from exploitation.