{"id":"CVE-2017-11428","aliases":["GHSA-x2fr-v8wf-8wwv"],"url":"https://o3.security/vulnerability/CVE-2017-11428","summary":"Ruby-SAML Improper Authentication vulnerability","details":"OneLogin Ruby-SAML 1.6.0 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":"2019-04-17T14:29:00.323Z","modified":"2026-08-27T08:18:28.562324Z","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":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"RubyGems","name":"ruby-saml","fixedVersion":"1.7.0"}],"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T08:18:28.562324Z"}}