Medium 5.3Published Oct 23, 2025

CVE-2025-62236Frontier Airlines publicly available email address validation

Updated under an hour ago (Oct 28, 2026, 6:40 AM ET)

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It affects Frontier Airlines flyfrontier.com and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Frontier Airlines flyfrontier.com

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-204
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: cisa-cg
NVD analysis: Analyzed
Record last updated: Oct 27, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Frontier Airlines flyfrontier.com frontier_airlines:flyfrontier.com (from the name)	all versions	CNA record
flyfrontier frontier_airlines flyfrontier:frontier_airlines	all versions	NVD

References

References

https://www.cve.org/CVERecord?id=CVE-2025-62236	third-party-advisory, us-government-resource
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.