Multiple cross-site scripting (XSS) vulnerabilities in ownCloud before 4.0.15, 4.5.x before 4.5.11, and 5.0.x before 5.0.6 allow remote authenticated users to inject arbitrary web script or HTML via the url parameter to (1) apps/bookmarks/ajax/addBookmark.php or (2) apps/bookmarks/ajax/editBookmark.php.

The contacts application in ownCloud before 4.5.10 and 5.x before 5.0.5 does not properly check the ownership of contacts, which allows remote authenticated users to download arbitrary contacts via unspecified vectors.

Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.0.13 and 4.5.x before 4.5.8, when the user_migrate application is enabled, allows remote authenticated users to import arbitrary files to the user's account via unspecified vectors.

The default Flash Cross Domain policies in ownCloud before 5.0.15 and 6.x before 6.0.2 allows remote attackers to access user files via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud before 4.0.15, 4.5.x before 4.5.11, and 5.0.x before 5.0.6 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

Directory traversal vulnerability in lib/files/view.php in ownCloud before 4.0.15, 4.5.x 4.5.11, and 5.x before 5.0.6 allows remote authenticated users to access arbitrary files via unspecified vectors.

Multiple incomplete blacklist vulnerabilities in (1) import.php and (2) ajax/uploadimport.php in apps/contacts/ in ownCloud before 4.0.13 and 4.5.x before 4.5.8 allow remote authenticated users to execute arbitrary PHP code by uploading a .htaccess file.

Multiple cross-site scripting (XSS) vulnerabilities in ownCloud 4.5.x before 4.5.8 allow remote authenticated users with administrator privileges to inject arbitrary web script or HTML via the (1) quota parameter to /core/settings/ajax/setquota.php, or remote authenticated users with group admin privileges to inject arbitrary web script or HTML via the (2) group field to settings.php or (3) "share with" field.

Multiple cross-site scripting (XSS) vulnerabilities in js/viewer.js in ownCloud before 4.5.12 and 5.x before 5.0.7 allow remote attackers to inject arbitrary web script or HTML via vectors related to shared files.

apps/calendar/ajax/events.php in ownCloud before 4.5.11 and 5.x before 5.0.6 does not properly check the ownership of a calendar, which allows remote authenticated users to download arbitrary calendars via the calendar_id parameter.