Cross-site scripting (XSS) vulnerability in Blackboard Academic Suite 6.2.3.23 allows remote authenticated users to inject arbitrary HTML or web script by bypassing client-side validation through disabling JavaScript when submitting an essay response, which has no server-side validation before being viewed via "View Attempt Details" in the Gradebook.

Blackboard Learning and Community Portal System in Academic Suite 6.3.1.424, 6.2.3.23, and other versions before 6 allows remote attackers to list all available categories via a blank category_id parameter to category.pl. NOTE: it is not clear whether this information is sensitive or not, so this might not be an exposure.

The login page in Blackboard Learning and Community Portal System in Academic Suite 6.3.1.424, 6.2.3.23, and other versions before 6 allows remote attackers to bypass authentication and gain privileges as other users via a modified user_id parameter and a "/" in the encoded_pw parameter.

Cross-site scripting (XSS) vulnerability in Blackboard Learning and Community Portal System in Academic Suite 6.3.1.424, 6.2.3.23, and other versions before 6 allows remote attackers to inject arbitrary web script or HTML via the context parameter to announcement.pl, which is reflected in the resulting page.

announcement.pl in Blackboard Learning and Community Portal System in Academic Suite 6.3.1.424, 6.2.3.23, and other versions before 6 allows remote attackers to gain administrator privileges by setting the context parameter to "admin".

Blackboard Learning and Community Portal System in Academic Suite 6.3.1.424, 6.2.3.23, and other versions before 6 allows remote attackers to redirect users to other URLs and conduct phishing attacks via a modified url parameter to frameset.jsp, which loads the URL into a frame and causes it to appear to be part of a valid page.