CVE-2015-1856 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1856): OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows remote authenticated users to delete the latest version of an object by leveraging listing access to the x-versions-location container.
*swift-2.2.2-r1 (14 Apr 2015) 14 Apr 2015; Matthew Thode <prometheanfire@gentoo.org> +files/cve-2015-1856-master-kilo.patch, +swift-2.2.2-r1.ebuild, -swift-2.2.0.ebuild, -swift-2.2.2.ebuild: fixing cve-2015-1856