CVE-2026-1105 identifies a SQL injection vulnerability in EasyCMS, a content management system, affecting all versions up to 1.6. The vulnerability is located in the /UserAction.class.php file, specifically involving the _order parameter, which is used in SQL queries without proper sanitization or parameterization. This allows an attacker to remotely inject arbitrary SQL code, potentially manipulating database queries to read, modify, or delete data. The attack vector requires no authentication or user interaction, making it highly accessible to remote attackers. The vulnerability impacts the confidentiality, integrity, and availability of the CMS database, as attackers could extract sensitive information, alter content, or disrupt service. Although no confirmed exploits are currently active in the wild, a public exploit exists, increasing the likelihood of exploitation. The vendor has not issued a patch or responded to disclosure attempts, leaving users exposed. The CVSS 4.0 base score of 6.9 reflects the vulnerability's medium severity, considering the ease of exploitation and the partial impact on data security. The lack of vendor response and patch availability necessitates proactive defensive measures by users of EasyCMS.

The SQL injection vulnerability in EasyCMS can have significant impacts on organizations using this CMS. Attackers exploiting this flaw can gain unauthorized access to sensitive database information, including user credentials, content data, and configuration details. This can lead to data breaches, loss of data integrity through unauthorized modifications, and potential service disruptions if the database is corrupted or manipulated. The remote and unauthenticated nature of the exploit increases the attack surface, making it easier for threat actors to compromise vulnerable systems. Organizations relying on EasyCMS for public-facing websites or internal portals risk reputational damage, regulatory penalties due to data exposure, and operational downtime. The absence of an official patch and vendor support exacerbates the risk, as organizations must rely on their own mitigations. The availability of a public exploit further increases the likelihood of attacks, potentially leading to widespread exploitation if not addressed promptly.

To mitigate CVE-2026-1105, organizations should implement the following specific measures: 1) Apply strict input validation and sanitization on the _order parameter and all user-supplied inputs to prevent injection of malicious SQL code. 2) Employ parameterized queries or prepared statements in the CMS codebase to eliminate direct concatenation of user inputs into SQL commands. 3) Deploy a Web Application Firewall (WAF) with rules designed to detect and block SQL injection attempts targeting EasyCMS, especially focusing on the _order parameter. 4) Monitor web server and database logs for unusual query patterns or repeated access attempts to /UserAction.class.php. 5) Restrict database user privileges to the minimum necessary, limiting the potential damage from a successful injection. 6) Consider isolating the CMS environment and using network segmentation to reduce exposure. 7) If feasible, migrate to alternative CMS platforms with active vendor support and security updates. 8) Regularly back up CMS data to enable recovery in case of compromise. 9) Engage in active threat intelligence monitoring for emerging exploits targeting EasyCMS. These steps go beyond generic advice by focusing on the specific vulnerable parameter, code practices, and compensating controls given the lack of vendor patches.