{"id":"CVE-2024-21632","aliases":["GHSA-5g66-628f-7cvj"],"url":"https://o3.security/vulnerability/CVE-2024-21632","summary":"omniauth-microsoft_graph vulnerable to account takeover (nOAuth)","details":"omniauth-microsoft_graph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the `email` attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases when the `email` is used as a trusted user identifier. This could lead to account takeover. Version 2.0.0 contains a fix for this issue.\n","published":"2024-01-02T21:54:54.527Z","modified":"2026-07-15T01:49:16.596391093Z","cvss":{"score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"RubyGems","name":"omniauth-microsoft_graph","fixedVersion":"2.0.0"}],"fix":{"url":"https://github.com/synth/omniauth-microsoft_graph/commit/f132078389612b797c872b45bd0e0b47382414c1","label":"synth/omniauth-microsoft_graph@f132078"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21632.json"},{"type":"ADVISORY","url":"https://github.com/synth/omniauth-microsoft_graph/security/advisories/GHSA-5g66-628f-7cvj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21632"},{"type":"FIX","url":"https://github.com/synth/omniauth-microsoft_graph/commit/f132078389612b797c872b45bd0e0b47382414c1"},{"type":"ARTICLE","url":"https://www.descope.com/blog/post/noauth"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:16.596391093Z"}}