{"id":"CVE-2017-11427","details":"OneLogin PythonSAML 2.3.0 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.","aliases":["GHSA-j8j8-348v-wfm3","PYSEC-2019-198"],"modified":"2026-08-27T08:18:29.359548Z","published":"2019-04-17T14:29:00.247Z","related":["SUSE-SU-2021:0048-1","openSUSE-SU-2024:11262-1","openSUSE-SU-2024:14159-1"],"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/SAML-Toolkits/python-saml","events":[{"introduced":"0"},{"last_affected":"b089e782ca954eedd2157dc5d5d7115ab1ed2fac"}],"database_specific":{"cpe":"cpe:2.3:a:onelogin:pythonsaml:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"2.3.0"}],"source":"CPE_RANGE"}}],"versions":["v2.3.0","v2.2.3","v2.2.2","v2.2.1","v2.2.0","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.0","v2.0.2","v2.0.1","v.1.1.0","v.1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-11427.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}