ownCloud Server prior to 5.0.19, 6.x prior to 6.0.7, and 7.x prior to 7.0.5 allows remote authenticated users to bypass the file blacklist and upload arbitrary files via a file path with UTF-8 encoding, as demonstrated by uploading a .htaccess file.
Multiple vulnerabilities were discovered in ownCloud, a cloud storage
web service for files, music, contacts, calendars and many more
Hugh Davenport discovered that the contacts application shipped
with ownCloud is vulnerable to multiple stored cross-site
scripting attacks This vulnerability is effectively exploitable