Multiple unspecified vulnerabilities in XOOPS before 2.4.0 Final have unknown impact and attack vectors.

Multiple directory traversal vulnerabilities in XOOPS 2.3.1, when registerglobals is enabled, allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in the xoopsConfig[language] parameter to (1) blocks.php and (2) main.php in xoopslib/modules/protector/.

Multiple cross-site scripting (XSS) vulnerabilities in XOOPS 2.5.1.a, and possibly earlier versions, allow remote attackers to inject arbitrary web script or HTML via the (1) text parameter to include/formdhtmltextareapreview.php or (2) img BBCODE tag within the message parameter to pmlite.php (aka Private Message). NOTE: some of these details are obtained from third party information.

Cross-site scripting (XSS) vulnerability in pmlite.php in XOOPS 2.3.1 and 2.3.2a allows remote attackers to inject arbitrary web script or HTML via a STYLE attribute in a URL BBcode tag in a private message.