CVE-2026-3786 is a SQL injection vulnerability identified in EasyCMS, a content management system, affecting all versions up to 1.6. The vulnerability resides in an unknown function within the /RbacuserAction.class.php file, specifically in the component responsible for handling request parameters. The attack vector involves manipulation of the _order argument, which is improperly sanitized, allowing an attacker to inject arbitrary SQL commands. This flaw can be exploited remotely without requiring authentication or user interaction, making it accessible to a wide range of attackers. The vulnerability's CVSS 4.0 score is 5.3, indicating medium severity, with partial impact on confidentiality, integrity, and availability. The vendor has been notified but has not issued any patches or advisories, and public exploit code is available, increasing the likelihood of exploitation. This vulnerability could allow attackers to extract sensitive data, modify database contents, or disrupt service availability, depending on the injected payload. The lack of vendor response and patch availability necessitates immediate defensive measures by organizations using EasyCMS. The vulnerability affects all listed versions from 1.0 to 1.6, which are presumably widely deployed in various environments.

The SQL injection vulnerability in EasyCMS can have significant impacts on organizations worldwide. Exploitation can lead to unauthorized disclosure of sensitive information stored in the database, including user credentials, personal data, or business-critical content. Attackers may also alter or delete data, undermining data integrity and potentially causing operational disruptions. In some cases, SQL injection can be leveraged to escalate privileges or execute arbitrary commands on the underlying server, further compromising system security. The remote and unauthenticated nature of the exploit increases the attack surface, making it easier for threat actors to target vulnerable systems en masse. Organizations relying on EasyCMS for content management, especially those handling sensitive or regulated data, face risks of data breaches, reputational damage, and compliance violations. The absence of vendor patches and the availability of public exploits heighten the urgency for mitigation. Additionally, availability could be impacted if attackers use SQL injection to cause database errors or denial of service conditions.

Given the lack of official patches from the vendor, organizations should implement immediate compensating controls. First, apply web application firewalls (WAFs) with custom rules to detect and block malicious payloads targeting the _order parameter in /RbacuserAction.class.php. Conduct thorough input validation and sanitization on all request parameters, especially _order, to prevent injection. If possible, restrict or disable the vulnerable functionality until a patch is available. Monitor logs for unusual database queries or error messages indicative of SQL injection attempts. Employ network segmentation and least privilege principles to limit database access from the web application. Regularly back up databases to enable recovery from potential data corruption. Consider migrating to alternative CMS platforms or updated versions once patches or vendor support become available. Finally, maintain heightened threat intelligence monitoring for emerging exploits targeting EasyCMS and respond promptly to any incidents.