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.

Cross-site scripting (XSS) vulnerability in MercuryBoard before 1.1.3 allows remote attackers to inject arbitrary web script or HTML via the title field of a PM (private message).

SQL injection vulnerability in index.php for MercuryBoard 1.1.4 and earlier allows remote attackers to execute arbitrary SQL commands via the User-Agent HTTP header.