{"schema_version":"1.7.3","id":"GHSA-vmwr-mc7x-5vc3","published":"2024-08-22T16:40:46Z","modified":"2026-02-04T03:05:55.848153Z","aliases":["CVE-2024-43398"],"related":["CGA-qww7-xhcp-fpxg"],"summary":"REXML denial of service vulnerability","details":"### Impact\n\nThe REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes.\n\nIf you need to parse untrusted XMLs with tree parser API like `REXML::Document.new`, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected.\n\n### Patches\n\nThe REXML gem 3.3.6 or later include the patch to fix the vulnerability.\n\n### Workarounds\n\nDon't parse untrusted XMLs with tree parser API.\n\n### References\n\n* https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398/ : An announce on www.ruby-lang.org","affected":[{"package":{"name":"rexml","ecosystem":"RubyGems","purl":"pkg:gem/rexml"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.6"}]}],"versions":["3.1.7.3","3.1.8","3.1.9","3.1.9.1","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.3.0","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/08/GHSA-vmwr-mc7x-5vc3/GHSA-vmwr-mc7x-5vc3.json"}}],"references":[{"type":"WEB","url":"https://github.com/ruby/rexml/security/advisories/GHSA-vmwr-mc7x-5vc3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-43398"},{"type":"WEB","url":"https://github.com/ruby/rexml/commit/7cb5eaeb221c322b9912f724183294d8ce96bae3"},{"type":"PACKAGE","url":"https://github.com/ruby/rexml"},{"type":"WEB","url":"https://github.com/ruby/rexml/releases/tag/v3.3.6"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-43398.yml"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20250103-0006"},{"type":"WEB","url":"https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398"}],"database_specific":{"cwe_ids":["CWE-776"],"github_reviewed":true,"github_reviewed_at":"2024-08-22T16:40:46Z","nvd_published_at":"2024-08-22T15:15:16Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}