The Red Hat gluster-swift package, as used in Red Hat Gluster Storage (formerly Red Hat Storage Server), allows remote authenticated users to bypass the max_meta_count constraint via multiple crafted requests which exceed the limit when combined.
https://bugzilla.redhat.com/show_bug.cgi?id=1257525
http://www.openwall.com/lists/oss-security/2015/08/27/5