An arbitrary file upload vulnerability in the /fileUpload.lib.php component of Chamilo 1.11. up to v1.11.18 allows attackers to execute arbitrary code via uploading a crafted SVG file.

Incorrect access control in Chamilo v1.11.x up to v1.11.18 allows a student to arbitrarily access and modify another student's personal notes.

Chamilo v1.11.x up to v1.11.18 was discovered to contain a cross-site scripting (XSS) vulnerability via the /feedback/comment field.

Incorrect access control in Chamilo 1.11. up to 1.11.18 allows a student subscribed to a given course to download documents belonging to another student if they know the document's ID.

An issue in Chamilo v1.11. up to v1.11.18 allows attackers to execute a Server-Side Request Forgery (SSRF) and obtain information on the services running on the server via crafted requests in the social and links tools.

A user without privileges in Chamilo LMS 1.11.14 can send an invitation message to another user, e.g., the administrator, through main/social/search.php, main/inc/lib/social.lib.php and steal cookies or execute arbitrary code on the administration side via a stored XSS vulnerability via social network the send invitation feature.

Chamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code execution. This attack appear to be exploitable via a simple GET request to the api endpoint. This vulnerability appears to have been fixed in After commit 0de84700648f098c1fbf6b807dee28ec640efe62.