Upstream released owncloud version 6.0.4 with a security fix [1]. The details are unknown at this moment, as per the Changelog details will be disclosed on Jul 7th 2014. [1]: http://owncloud.org/releases/Changelog
Created owncloud tracking bugs for this issue: Affects: fedora-20 [bug 1114606]
owncloud-6.0.4-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.