Vault’s Azure Authentication Method bound_location Restriction Could be Bypassed on Login

{
  "id": "19c0312d9aebd01a01ce348a7c5b15a57f595cc4e87a56b083d6e64d77f6affc",
  "url": "https://osv.dev/vulnerability/CVE-2025-3879",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Vault’s Azure Authentication Method bound_location Restriction Could be Bypassed on Login",
    "summary": "Vault Community, Vault Enterprise (“Vault”) Azure Auth method did not correctly validate the claims in the Azure-issued token, resulting in the potential bypass of the bound_locations parameter on login. Fixed in Vault Community Edition 1.19.1 and Vault Enterprise 1.19.1, 1.18.7, 1.17.14, 1.16.18.",
    "evidence": "osv:CVE-2025-3879",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-3879",
      "aliases": [
        "BIT-vault-2025-3879",
        "CVE-2025-3879",
        "GHSA-f9ch-h8j7-8jwg",
        "GO-2025-3662"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hashicorp/vault",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5dd7f25f5c4b541f2da62d70075b6f82771a650d"
                },
                {
                  "fixed": "aa75903ec499b2236da9e7bbbfeb7fd16fa4fd9d"
                },
                {
                  "introduced": "7eeafb6160d60ede73c1d95566b0c8ea54f3cb5a"
                },
                {
                  "last_affected": "7eeafb6160d60ede73c1d95566b0c8ea54f3cb5a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "0.10.0"
                      },
                      {
                        "fixed": "1.19.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:hashicorp:vault:1.19.0:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "1.19.0"
                      },
                      {
                        "last_affected": "1.19.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.19.0",
            "v1.19.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-3879.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.308320Z",
      "provider": "osv",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2025-07-vault-s-azure-authentication-method-bound-location-restriction-could-be-bypassed-on-login/74716",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3879.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-3879",
        "https://github.com/hashicorp/vault"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "HashiCorp",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3879.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-3879",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513421,
  "published_at": "2025-05-02T16:15:10.65+00:00"
}