{"id":"CVE-2024-43398","aliases":["GHSA-vmwr-mc7x-5vc3"],"url":"https://o3.security/vulnerability/CVE-2024-43398","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","published":"2024-08-22T14:14:03.588Z","modified":"2026-10-28T02:30:40.901470342Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"rexml","fixedVersion":"3.3.6"}],"fix":{"url":"https://github.com/ruby/rexml/commit/7cb5eaeb221c322b9912f724183294d8ce96bae3","label":"ruby/rexml@7cb5eae"},"references":[{"type":"WEB","url":"https://github.com/ruby/rexml/releases/tag/v3.3.6"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43398.json"},{"type":"ADVISORY","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":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20250103-0006/"},{"type":"WEB","url":"https://github.com/ruby/rexml/commit/7cb5eaeb221c322b9912f724183294d8ce96bae3"},{"type":"PACKAGE","url":"https://github.com/ruby/rexml"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-43398.yml"},{"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:40.901470342Z"}}