CVE-2025-56316 is a critical SQL injection vulnerability identified in MCMS version 5.5.0, specifically within the content_title parameter of the /cms/content/list endpoint. The root cause is the lack of proper input sanitization before the FreeMarker template engine processes the parameter, enabling attackers to inject malicious SQL commands remotely. This vulnerability allows unauthorized execution of arbitrary SQL queries against the backend database, potentially leading to data leakage, unauthorized data modification, or complete compromise of the CMS database. Since the vulnerability is exploitable remotely without authentication or user interaction, it significantly lowers the barrier for attackers. The absence of a CVSS score indicates that the vulnerability is newly published and pending formal scoring. No patches or known exploits have been reported yet, but the risk remains substantial due to the nature of SQL injection flaws. Organizations using MCMS 5.5.0 should prioritize identifying affected instances and implementing protective measures. The vulnerability could be leveraged to extract sensitive content, manipulate CMS data, or disrupt service availability, impacting business operations and data privacy.

For European organizations, exploitation of this vulnerability could result in unauthorized access to sensitive content managed by MCMS, data breaches involving confidential information, and potential defacement or disruption of web services. This could affect sectors such as government, media, education, and enterprises relying on MCMS for content management. The integrity of published content could be compromised, leading to misinformation or reputational damage. Additionally, attackers could leverage the vulnerability to pivot deeper into internal networks if the CMS database contains credentials or other critical information. The lack of authentication requirement increases the risk of widespread exploitation. Regulatory implications under GDPR may arise if personal data is exposed, leading to legal and financial consequences. The overall impact includes loss of confidentiality, integrity, and availability of CMS-managed data and services.

1. Immediately audit all MCMS 5.5.0 deployments to identify vulnerable instances. 2. Implement strict input validation and sanitization on the content_title parameter to prevent injection of malicious SQL code. 3. Employ Web Application Firewalls (WAFs) with rules targeting SQL injection patterns specific to FreeMarker template rendering. 4. Restrict access to the /cms/content/list endpoint to trusted IPs or via VPN where feasible. 5. Monitor logs for unusual query patterns or error messages indicative of injection attempts. 6. Engage with the MCMS vendor or community to obtain and apply patches or updates addressing this vulnerability as soon as they become available. 7. Conduct penetration testing focusing on injection vectors in the CMS environment. 8. Educate developers and administrators on secure coding practices related to template engines and input handling. 9. Consider isolating the CMS database with least privilege principles to limit damage in case of exploitation.