Vulnerability-Lookup

CVE-2025-62236 (GCVE-0-2025-62236)

Vulnerability from cvelistv5 – Published: 2025-10-23 19:31 – Updated: 2025-10-27 13:45 Exclusively Hosted Service

Title

Frontier Airlines publicly available email address validation

Summary

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.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · cisa-cg (v2.0.3)

Decision recorded 2025-10-06 16:51 UTC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-27 13:44 UTC

CWE

CWE-204 - Observable Response Discrepancy

Assigner

cisa-cg

References

2 references

URL	Tags
https://www.cve.org/CVERecord?id=CVE-2025-62236
https://raw.githubusercontent.com/cisagov/CSAF/de…

Impacted products

1 product

Vendor	Product	Version
Frontier Airlines	flyfrontier.com	Affected: *

Date Public

2025-10-23 00:00

Credits

Yuriy Kuzma

Show details on NVD website

JSON

To clipboard

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    }
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  "cveMetadata": {
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    "state": "PUBLISHED"
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FKIE_CVE-2025-62236

Vulnerability from fkie_nvd - Published: 2025-10-23 20:15 - Updated: 2026-06-17 09:51

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Summary

References

	URL	Tags
	9119a7d8-5eab-497f-8521-727c672e3725	https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json	Third Party Advisory
	9119a7d8-5eab-497f-8521-727c672e3725	https://www.cve.org/CVERecord?id=CVE-2025-62236	Third Party Advisory, US Government Resource

Impacted products

	Vendor	Product	Version
	flyfrontier	frontier_airlines	-

JSON

To clipboard

{
  "affected": [
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      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "flyfrontier.com",
          "vendor": "Frontier Airlines",
          "versions": [
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              "status": "affected",
              "version": "*"
            }
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    }
  ],
  "configurations": [
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              "vulnerable": true
            }
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [
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      "sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725",
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      "value": "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."
    }
  ],
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  "lastModified": "2026-06-17T09:51:37.427",
  "metrics": {
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          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
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          "exploitMaturity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
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      "type": "Secondary"
    }
  ]
}

GHSA-6C55-4C23-GP8X

Vulnerability from github – Published: 2025-10-23 21:31 – Updated: 2025-10-23 21:31

Details

Severity

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-62236"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-204"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-23T20:15:40Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-6c55-4c23-gp8x",
  "modified": "2025-10-23T21:31:44Z",
  "published": "2025-10-23T21:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62236"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-62236"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

VA-25-296-01

Vulnerability from csaf_cisa - Published: 2025-10-23 00:00 - Updated: 2025-10-23 00:00

Summary

Frontier Airlines website publicly available email address validation

Notes

Legal Notice: 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/).

Countries and Areas Deployed: Worldwide

Critical Infrastructure Sectors: Transportation Systems

Risk Evaluation: 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.

Recommended Practices: Use a sufficiently strong password unique to flyfrontier.com. Enable multi-factor authentication (MFA) if available.

Company Headquarters Location: United States

CVE-2025-62236

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE-204 - Observable Response Discrepancy

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Frontier Airlines flyfrontier.com vers:all/* Frontier Airlines / flyfrontier.com		vers:all/*	None Available

References

3 references

URL	Category
https://raw.githubusercontent.com/cisagov/CSAF/de…	self
https://www.cve.org/CVERecord?id=CVE-2025-62236	external
https://raw.githubusercontent.com/cisagov/CSAF/de…	external

Acknowledgments

Yuriy Kuzma

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "legal_disclaimer",
        "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": "other",
        "text": "Worldwide",
        "title": "Countries and Areas Deployed"
      },
      {
        "category": "other",
        "text": "Transportation Systems",
        "title": "Critical Infrastructure Sectors"
      },
      {
        "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": "Risk Evaluation"
      },
      {
        "category": "general",
        "text": "Use a sufficiently strong password unique to flyfrontier.com. Enable multi-factor authentication (MFA) if available.",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "United States",
        "title": "Company Headquarters Location"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "https://www.cisa.gov/report",
      "issuing_authority": "CISA",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Vulnerability Advisory VA-25-296-01 CSAF",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json"
      }
    ],
    "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",
      "revision_history": [
        {
          "date": "2025-10-23T00:00:00Z",
          "number": "1.0.0",
          "summary": "Initial publication"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "vers:all/*",
                "product": {
                  "name": "Frontier Airlines flyfrontier.com vers:all/*",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "flyfrontier.com"
          }
        ],
        "category": "vendor",
        "name": "Frontier Airlines"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Yuriy Kuzma"
          ]
        }
      ],
      "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",
          "text": "SSVCv2/E:P/A:Y/T:P/2025-10-06T16:51:39Z/",
          "title": "SSVC"
        }
      ],
      "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"
        }
      ],
      "release_date": "2025-10-23T00:00:00Z",
      "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"
          ]
        }
      ],
      "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"
          ]
        }
      ],
      "title": "Frontier Airlines publicly available email address validation"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2025-62236 (GCVE-0-2025-62236)

FKIE_CVE-2025-62236

GHSA-6C55-4C23-GP8X

VA-25-296-01

Tags

Sightings

Nomenclature