CVE-2026-1105 is a SQL injection vulnerability identified in EasyCMS versions 1.0 through 1.6, specifically in the /UserAction.class.php file. The vulnerability arises from improper sanitization of the _order parameter, which is used in SQL queries without adequate validation or parameterization. This allows a remote attacker to inject malicious SQL code by manipulating the _order argument, leading to unauthorized database queries. The attack vector is network accessible (AV:N), requires no authentication (PR:N), and no user interaction (UI:N), making it straightforward to exploit. The impact includes partial compromise of confidentiality, integrity, and availability of the affected system's data, as indicated by the CVSS vector (VC:L, VI:L, VA:L). The vulnerability scope is unchanged (SC:N), and the exploitability is rated as partially functional (E:P). Despite the availability of a public exploit, no active exploitation has been reported. The vendor has not issued any patches or responses, increasing the urgency for users to apply alternative mitigations or consider upgrading. This vulnerability can be leveraged to extract sensitive information, modify database contents, or disrupt service availability, posing a significant risk to web applications relying on EasyCMS. Given the lack of vendor response, organizations must rely on defensive coding practices, web application firewalls, and monitoring to mitigate potential attacks.

For European organizations, the impact of CVE-2026-1105 can be significant, especially for those relying on EasyCMS for content management and web presence. Successful exploitation can lead to unauthorized data disclosure, including potentially sensitive customer or business information, undermining confidentiality. Integrity of data may be compromised through unauthorized modification or deletion of database records, affecting business operations and trustworthiness. Availability could also be impacted if attackers execute destructive queries or cause database errors, leading to service outages. This vulnerability is particularly concerning for organizations subject to strict data protection regulations such as GDPR, as data breaches could result in legal penalties and reputational damage. Additionally, the lack of vendor patches means organizations must proactively implement mitigations to avoid exploitation. The presence of a public exploit increases the risk of opportunistic attacks, especially targeting smaller organizations with limited cybersecurity resources. Overall, the vulnerability poses a moderate to high risk to European entities using EasyCMS, necessitating immediate attention to prevent data breaches and service disruptions.

1. Immediately audit all EasyCMS instances to identify affected versions (1.0 to 1.6) and prioritize their remediation. 2. Since no official patches are available, consider upgrading to a newer, unaffected CMS platform or a version that addresses this vulnerability once released. 3. Implement web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the _order parameter, including signature-based and anomaly detection methods. 4. Employ input validation and sanitization at the application level for all user-supplied parameters, especially those used in database queries. 5. Restrict database user permissions to the minimum necessary, limiting the potential damage from SQL injection exploitation. 6. Monitor web server and database logs for unusual query patterns or repeated attempts to manipulate the _order parameter. 7. Conduct regular security assessments and penetration testing focused on injection vulnerabilities. 8. Educate developers and administrators about secure coding practices and the risks of unsanitized inputs. 9. Consider deploying runtime application self-protection (RASP) solutions to detect and block injection attacks in real time. 10. Prepare incident response plans to quickly address any detected exploitation attempts.