The remote host is vulnerable to an HTML injection attack.
The remote host is running Blackboard, a web-based academic software package that allows organizations to teach students remotely. This version of Blackboard is vulnerable to multiple HTML injection flaws. An attacker exploiting these flaws would need the ability to log in as a valid user. Successful exploitation would result in the attacker gaining confidential data from other Blackboard users.
Upgrade or patch according to vendor recommendations.