A Stored XSS vulnerability exists in the message compose feature of Chamilo LMS 1.11.28. Attackers can inject malicious scripts into messages, which execute when victims, such as administrators, reply to the message.
https://github.com/chamilo/chamilo-lms/commit/d5c29cf39ac30d7364a52bba4036c3e870412066
https://github.com/chamilo/chamilo-lms/commit/beb07770d674fcc9db6df0e59aab107678c28682
https://gist.github.com/NoSpaceAvailable/234acdf57b5d7b29b2f39090c1686bc8