{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "lang": "en-US",
    "publisher": {
      "category": "coordinator",
      "contact_details": "https://www.cisa.gov/report",
      "issuing_authority": "CISA",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "title": "Frontier Airlines website publicly available email address validation",
    "tracking": {
      "current_release_date": "2025-10-23T00:00:00Z",
      "generator": {
        "engine": {
          "name": "VINCE-NT",
          "version": "1.10.0"
        }
      },
      "id": "VA-25-296-01",
      "initial_release_date": "2025-10-23T00:00:00Z",
      "status": "final",
      "version": "1.0.0",
      "revision_history": [
        {
          "number": "1.0.0",
          "summary": "Initial publication",
          "date": "2025-10-23T00:00:00Z"
        }
      ]
    },
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "text": "All information products included in [https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white](https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white) are provided \\\"as is\\\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see [https://us-cert.cisa.gov/tlp/](https://us-cert.cisa.gov/tlp/).",
        "title": "Legal Notice",
        "category": "legal_disclaimer"
      },
      {
        "text": "Worldwide",
        "title": "Countries and Areas Deployed",
        "category": "other"
      },
      {
        "text": "Transportation Systems",
        "title": "Critical Infrastructure Sectors",
        "category": "other"
      },
      {
        "text": "The Frontier Airlines website has a publicly available endpoint that validates if an email addresses is associated with an account. An unauthenticated, remote attacker could determine valid email addresses, possibly aiding in further attacks.",
        "title": "Risk Evaluation",
        "category": "summary"
      },
      {
        "text": "Use a sufficiently strong password unique to flyfrontier.com. Enable multi-factor authentication (MFA) if available.",
        "title": "Recommended Practices",
        "category": "general"
      },
      {
        "text": "United States",
        "title": "Company Headquarters Location",
        "category": "other"
      }
    ],
    "references": [
      {
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json",
        "summary": "Vulnerability Advisory VA-25-296-01 CSAF",
        "category": "self"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "category": "vendor",
        "name": "Frontier Airlines",
        "branches": [
          {
            "category": "product_name",
            "name": "flyfrontier.com",
            "branches": [
              {
                "category": "product_version",
                "name": "vers:all/*",
                "product": {
                  "name": "Frontier Airlines flyfrontier.com vers:all/*",
                  "product_id": "CSAFPID-0001"
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-62236",
      "cwe": {
        "id": "CWE-204",
        "name": "Observable Response Discrepancy"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The Frontier Airlines website has a publicly available endpoint that validates if an email addresses is associated with an account. An unauthenticated, remote attacker could determine valid email addresses, possibly aiding in further attacks.",
          "title": "Description"
        },
        {
          "category": "details",
          "title": "SSVC",
          "text": "SSVCv2/E:P/A:Y/T:P/2025-10-06T16:51:39Z/"
        }
      ],
      "title": "Frontier Airlines publicly available email address validation",
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-62236",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-62236"
        },
        {
          "category": "external",
          "summary": "VA-25-296-01",
          "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "details": "Use a sufficiently strong password unique to flyfrontier.com. Enable multi-factor authentication (MFA) if available.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "acknowledgments": [
        {
          "names": [
            "Yuriy Kuzma"
          ]
        }
      ],
      "release_date": "2025-10-23T00:00:00Z"
    }
  ]
}