{"id":"CVE-2017-11430","aliases":["GHSA-94hm-8q65-rmxm"],"url":"https://o3.security/vulnerability/CVE-2017-11430","summary":"OmniAuth-SAML authentication bypass via incorrect XML canonicalization and DOM traversal","details":"OmniAuth OmnitAuth-SAML 1.9.0 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.","published":"2019-04-17T14:29:00.433Z","modified":"2026-10-24T10:30:26.142487203Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.02415,"percentile":0.83339,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"RubyGems","name":"omniauth-saml","fixedVersion":"1.10.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://www.kb.cert.org/vuls/id/475445"},{"type":"EVIDENCE","url":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11430"},{"type":"PACKAGE","url":"https://github.com/omniauth/omniauth-saml"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/omniauth-saml/CVE-2017-11430.yml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:26.142487203Z"}}