CVE-2023-4220

Summary

CVE-2023-4220 is a critical vulnerability affecting Chamilo Learning Management System (LMS) versions prior to 1.11.24. This issue arises due to an unrestricted file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php`. An attacker can exploit this vulnerability by uploading malicious files, leading to stored cross-site scripting attacks and potentially achieving remote code execution as an unauthenticated user. This poses a significant security risk and requires immediate attention from Chamilo LMS administrators to apply the necessary patches or updates.

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