omniauth-microsoft_graph vulnerable to account takeover (nOAuth)

{
  "id": "c2ed6e51602cdbd4f8f522e55296d77cce42eacb77e19c719931cabd1b53340e",
  "url": "https://osv.dev/vulnerability/CVE-2024-21632",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "omniauth-microsoft_graph vulnerable to account takeover (nOAuth)",
    "summary": "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.",
    "evidence": "osv:CVE-2024-21632",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-21632",
      "aliases": [
        "CVE-2024-21632",
        "GHSA-5g66-628f-7cvj"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/synth/omniauth-microsoft_graph",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "cba8a27264d230fffa011ab9df461eb918fef375"
                },
                {
                  "fixed": "f132078389612b797c872b45bd0e0b47382414c1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:recognizeapp:omniauth\\:\\:microsoftgraph:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f132078389612b797c872b45bd0e0b47382414c1"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.1.0",
            "1.0.0",
            "0.3.3",
            "0.3.2",
            "0.3.1",
            "0.3.0",
            "pre-oauth-v2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-21632.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.739638890Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21632.json",
        "https://github.com/synth/omniauth-microsoft_graph/security/advisories/GHSA-5g66-628f-7cvj",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-21632",
        "https://github.com/synth/omniauth-microsoft_graph/commit/f132078389612b797c872b45bd0e0b47382414c1",
        "https://www.descope.com/blog/post/noauth"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-287"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21632.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-21632",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491362,
  "published_at": "2024-01-02T21:54:54.527+00:00"
}