Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.0.13 and 4.5.8 allows an authenticated remote attacker to import arbitrary files on the server inside his user account.
It is recommended that all instances are upgraded to ownCloud Server 4.5.9 or 4.0.13.
The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory: