Cross-site scripting (XSS) vulnerability in the listonlineusers (aka "Who's online") component in mvnForum before 1.2.1 GA allows remote attackers to inject arbitrary web script or HTML via unspecified parameters.

Multiple cross-site request forgery (CSRF) vulnerabilities in mvnForum before 1.2.1 GA allow remote attackers to (1) create forums, (2) change account privileges, (3) enable accounts, or (4) disable accounts as a product administrator via unspecified vectors, possibly related to HTTP Referer headers.

Cross-site scripting (XSS) vulnerability in mvnForum 1.0 RC4 allows remote attackers to inject arbitrary web script or HTML via the Search parameter.

Multiple cross-site scripting (XSS) vulnerabilities in activatemember in mvnForum 1.0 GA and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) member and (2) activatecode parameters.