CVE-2025-50190 is an SQL Injection vulnerability classified under CWE-89, affecting Chamilo LMS, an open-source learning management system widely used in educational and corporate training environments. The vulnerability arises from improper neutralization of special elements in SQL commands, specifically through the GET parameter openid.assoc_handle in the /index.php script. This error-based SQL Injection allows an unauthenticated attacker to inject malicious SQL queries directly into the backend database, potentially exposing sensitive data or altering database contents. The vulnerability requires no authentication or user interaction, making it highly exploitable remotely over the network. The CVSS 4.0 score of 8.8 reflects the critical nature of the flaw, emphasizing its high impact on confidentiality and availability. The issue was addressed and patched in Chamilo LMS version 1.11.30, and users running earlier versions remain vulnerable. Although no active exploits have been reported in the wild, the simplicity of exploitation and the criticality of the LMS platform make this a significant threat. The vulnerability could be leveraged to extract user credentials, course data, or disrupt LMS operations, severely impacting educational institutions and organizations relying on Chamilo for training and learning management.

The potential impact of CVE-2025-50190 is substantial for organizations worldwide using vulnerable versions of Chamilo LMS. Successful exploitation can lead to unauthorized disclosure of sensitive information such as user credentials, personal data, and proprietary course content, compromising confidentiality. Attackers could also manipulate or delete database records, affecting data integrity and availability of the LMS service. This disruption could halt critical educational and training activities, causing operational downtime and reputational damage. Given the LMS’s role in managing large user bases and sensitive academic or corporate data, the breach could have cascading effects on compliance with data protection regulations and contractual obligations. The vulnerability’s remote, unauthenticated nature increases the attack surface, allowing widespread exploitation attempts, especially in environments with exposed LMS web interfaces. Organizations without timely patching or compensating controls face elevated risk of data breaches and service interruptions.

To mitigate CVE-2025-50190, organizations should immediately upgrade Chamilo LMS to version 1.11.30 or later, where the vulnerability is patched. If immediate upgrading is not feasible, implement web application firewall (WAF) rules to detect and block malicious SQL injection payloads targeting the openid.assoc_handle parameter. Restrict access to the LMS web interface by IP whitelisting or VPN to reduce exposure to untrusted networks. Conduct thorough logging and monitoring of database queries and web server access logs to detect anomalous activities indicative of SQL injection attempts. Employ input validation and parameterized queries in any custom integrations or plugins interacting with Chamilo LMS to prevent injection flaws. Regularly audit LMS deployments for outdated versions and apply security patches promptly. Educate system administrators and developers on secure coding practices and the risks of SQL injection vulnerabilities. Finally, maintain offline backups of LMS data to enable recovery in case of data corruption or deletion.