CVE-2025-62236 MEDIUM

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

Vendor Frontier Airlines
Product flyfrontier.com
Weakness CWE-204
Published October 23, 2025
Last update October 27, 2025

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 23, 2025 CVE published
October 27, 2025 Record updated