Cross-site scripting (XSS) vulnerability in index.php in MercuryBoard 1.1.5 allows remote attackers to inject arbitrary web script or HTML via the message parameter (aka the message text area), which leads to an injection in the messenger during private message (PM) preview. NOTE: some of these details are obtained from third party information.
Improper Neutralization of Input During Web Page Generation The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.