These are all security issues fixed in the ruby2.2-rubygem-rack-1_4-1.4.7-1.8 package on the GA media of openSUSE Tumbleweed.
{ "binaries": [ { "ruby2.2-rubygem-rack-1_4": "1.4.7-1.8", "ruby2.3-rubygem-rack-testsuite-1_4": "1.4.7-1.8", "ruby2.3-rubygem-rack-doc-1_4": "1.4.7-1.8", "ruby2.2-rubygem-rack-doc-1_4": "1.4.7-1.8", "ruby2.2-rubygem-rack-testsuite-1_4": "1.4.7-1.8", "ruby2.3-rubygem-rack-1_4": "1.4.7-1.8" } ] }