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/formdhtmltextarea_preview.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.
The activation resend function in the Profiles module in XOOPS before 2.4.1 sends activation codes in response to arbitrary activation requests, which allows remote attackers to bypass administrative approval via a request involving activate.php.
Multiple directory traversal vulnerabilities in XOOPS 2.3.1, when register_globals 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 xoops_lib/modules/protector/.
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.