Chamilo LMS, an open-source learning management system, suffers from an OS Command Injection vulnerability identified as CVE-2025-50195. This vulnerability exists in versions prior to 1.11.30 within the /plugin/vchamilo/views/manage.controller.php component. The root cause is improper neutralization of special characters in OS commands (CWE-78), which allows an attacker with high privileges to inject and execute arbitrary operating system commands remotely. The vulnerability does not require user interaction and can be exploited over the network, but it does require the attacker to have high-level privileges, such as administrative or equivalent access within the LMS. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:H), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (VC:L, VI:H, VA:H). The vulnerability was reserved in June 2025 and published in March 2026, with no known exploits reported in the wild to date. The Chamilo development team addressed this issue in version 1.11.30 by properly sanitizing inputs to prevent command injection. Given the nature of LMS platforms, exploitation could lead to unauthorized system control, data breaches, and disruption of educational services.

The impact of CVE-2025-50195 is significant for organizations relying on Chamilo LMS for educational and training purposes. Successful exploitation allows attackers with high privileges to execute arbitrary OS commands, potentially leading to full system compromise. This can result in unauthorized access to sensitive educational data, modification or deletion of course content, disruption of LMS availability, and lateral movement within the hosting environment. The integrity and confidentiality of user data, including student records and assessments, are at risk. Additionally, compromised LMS servers could be leveraged as a foothold for broader network attacks. The disruption of learning services can have operational and reputational consequences for educational institutions and corporate training departments worldwide.

To mitigate this vulnerability, organizations should immediately upgrade Chamilo LMS to version 1.11.30 or later, where the issue is patched. Until upgrading is possible, restrict access to the LMS administrative interfaces to trusted personnel only and enforce strong authentication and authorization controls to limit high-privilege user accounts. Implement network-level protections such as firewall rules to restrict access to the vulnerable endpoints. Conduct regular security audits and input validation reviews on custom LMS plugins or extensions. Employ application-layer firewalls or intrusion detection systems capable of detecting command injection patterns. Maintain up-to-date backups of LMS data to enable recovery in case of compromise. Finally, monitor system logs for unusual command executions or access patterns indicative of exploitation attempts.