Vulnerability · Published Oct 23, 2025 · Assigned by cisa-cg
CVE-2025-62236Frontier Airlines publicly available email address validation
Medium 5.3
In plain English
A medium-severity security flaw in flyfrontier.com from Frontier Airlines. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 73.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Frontier Airlines | flyfrontier.com | * |
Weakness: CWE-204 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N