{"id":"ALSA-2026:20596","summary":"Important: ruby:4.0 security update","details":"Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.  \n\nSecurity Fix(es):  \n\n  * ruby/json: Ruby JSON: Denial of Service or Information Disclosure via format string injection (CVE-2026-33210)\n  * erb: ERB: Arbitrary code execution via deserialization bypass (CVE-2026-41316)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","modified":"2026-05-27T14:30:06.392087474Z","published":"2026-05-26T00:00:00Z","related":["CVE-2026-33210","CVE-2026-41316"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:20596"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33210"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-41316"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2449871"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2461369"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2026-20596.html"}],"affected":[{"package":{"name":"ruby","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/ruby"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"ruby-bundled-gems","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/ruby-bundled-gems"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"ruby-default-gems","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/ruby-default-gems"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"ruby-devel","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/ruby-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"ruby-doc","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/ruby-doc"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"ruby-libs","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/ruby-libs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-bigdecimal","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-bigdecimal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.1-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-bundler","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-bundler"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.6-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-io-console","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-io-console"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.2-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-irb","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-irb"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.0-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-json","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-json"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.18.0-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-minitest","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-minitest"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-32.module_el9.8.0+251+5fdbd96b"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:20596.json"}},{"package":{"name":"rubygem-mysql2","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/rubygem-mysql2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.7-1.module_el9.8.0+232+50f6dd36"}]}],"database_specific":{"source":"https://g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