Vault LDAP MFA Enforcement Bypass When Using Username As Alias

{
  "id": "819fde171960dd82099d75dc9a0a9a2503644e524464f86e33d10a385fec9f56",
  "url": "https://osv.dev/vulnerability/CVE-2025-6013",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Vault LDAP MFA Enforcement Bypass When Using Username As Alias",
    "summary": "Vault and Vault Enterprise’s (“Vault”) ldap auth method may not have correctly enforced MFA if username_as_alias was set to true and a user had multiple CNs that are equal but with leading or trailing spaces. Fixed in Vault Community Edition 1.20.2 and Vault Enterprise 1.20.2, 1.19.8, 1.18.13, and 1.16.24.",
    "evidence": "osv:CVE-2025-6013",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-6013",
      "aliases": [
        "BIT-vault-2025-6013",
        "CVE-2025-6013",
        "GHSA-7rx2-769v-hrwf",
        "GO-2025-3848"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hashicorp/vault",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7738ec5d0d6f5bf94a809ee0f6ff0142cfa525a6"
                },
                {
                  "fixed": "824d12909d5b596ddd3f34d9c8f169b4f9701a0c"
                },
                {
                  "introduced": "6fdd6b59e97d97a9e19b0fb5304bf879c190295e"
                },
                {
                  "fixed": "824d12909d5b596ddd3f34d9c8f169b4f9701a0c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "1.10.0"
                      },
                      {
                        "fixed": "1.20.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "1.20.0"
                      },
                      {
                        "fixed": "1.20.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.20.1",
            "v1.20.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6013.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.930807098Z",
      "provider": "osv",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2025-20-vault-ldap-mfa-enforcement-bypass-when-using-username-as-alias/76092",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6013.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-6013",
        "https://github.com/hashicorp/vault"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-156"
        ],
        "cna_assigner": "HashiCorp",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "1.10.0"
                  },
                  {
                    "fixed": "1.19.8"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "ChangesAt"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6013.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-6013",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490606,
  "published_at": "2025-08-06T10:06:55.668+00:00"
}