{"id":"GHSA-xhqq-x44f-9fgg","summary":"Authentication Bypass in github.com/russellhaering/gosaml2","details":"### Impact\nGiven a valid SAML Response, it may be possible for an attacker to mutate the XML document in such a way that gosaml2 will trust a different portion of the document than was signed.\n\nDepending on the implementation of the Service Provider this enables a variety of attacks, including users accessing accounts other than the one to which they authenticated in the Identity Provider, or full authentication bypass.\n\n### Patches\nService Providers utilizing gosaml2 should upgrade to v0.6.0 or greater.","aliases":["BIT-golang-2020-29509","CVE-2020-29509","GO-2021-0060"],"modified":"2026-07-17T21:07:28.336676310Z","published":"2022-02-11T23:58:09Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2021-05-21T21:11:37Z","nvd_published_at":"2020-12-14T20:15:00Z","cwe_ids":["CWE-115"],"severity":"CRITICAL"},"references":[{"type":"WEB","url":"https://github.com/russellhaering/gosaml2/security/advisories/GHSA-xhqq-x44f-9fgg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29509"},{"type":"WEB","url":"https://github.com/russellhaering/gosaml2/commit/42606dafba60c58c458f14f75c4c230459672ab9"},{"type":"WEB","url":"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2021-0060"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20210129-0006"}],"affected":[{"package":{"name":"github.com/russellhaering/gosaml2","ecosystem":"Go","purl":"pkg:golang/github.com/russellhaering/gosaml2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.6.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-xhqq-x44f-9fgg/GHSA-xhqq-x44f-9fgg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}