{"id":"CVE-2017-6181","details":"The parse_char_class function in regparse.c in the Onigmo (aka Oniguruma-mod) regular expression library, as used in Ruby 2.4.0, allows remote attackers to cause a denial of service (deep recursion and application crash) via a crafted regular expression.","modified":"2026-07-08T11:36:03.085226Z","published":"2017-04-03T05:59:00.847Z","references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/97304"},{"type":"REPORT","url":"https://bugs.ruby-lang.org/issues/13234"},{"type":"REPORT","url":"https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ruby/ruby","events":[{"introduced":"d4bb726b713658f56e630b6cf817a0155b6f390e"},{"last_affected":"d4bb726b713658f56e630b6cf817a0155b6f390e"}],"database_specific":{"source":"CPE_STRING","cpe":"cpe:2.3:a:ruby-lang:ruby:2.4.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.4.0"},{"last_affected":"2.4.0"}]}}],"versions":["2.4.0","v2_4_0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-6181.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}