Multiple cross-site scripting (XSS) vulnerabilities in OSClass before 3.4.2 allow remote attackers to inject arbitrary web script or HTML via the (1) action or (2) nsextt parameter to oc-admin/index.php or the (3) nsextt parameter in an items_reported action to oc-admin/index.php.

Directory traversal vulnerability in OSClass before 3.4.2 allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter in a render action to oc-admin/index.php.

SQL injection vulnerability in the Search::setJsonAlert method in OSClass before 3.4.3 allows remote attackers to execute arbitrary SQL commands via the alert parameter in a search alert subscription action.

Directory traversal vulnerability in oc-includes/osclass/controller/ajax.php in OSClass before 3.4.3 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the ajaxfile parameter in a custom action.

Unrestricted file upload vulnerability in the CWebContact::doModel method in oc-includes/osclass/controller/contact.php in OSClass before 3.4.3 allows remote attackers to execute arbitrary PHP code by uploading a file with a PHP extension, then accessing it via a direct request to the file in an unspecified directory.

osClass 3.6.1 allows oc-admin/plugins.php Directory Traversal via the plugin parameter. This is exploitable for remote PHP code execution because an administrator can upload an image that contains PHP code in the EXIF data via index.php?page=ajax&action=ajax_upload.

Osclass 3.7.4 has XSS via the query string to index.php, a different vulnerability than CVE-2014-6280.