CVE-2025-62236 Frontier Airlines publicly available email address validation
An unauthenticated attacker can enumerate valid user email addresses via a public validation endpoint, aiding targeted attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-62236?
CVE-2025-62236 is a medium-severity vulnerability in flyfrontier.com, published on 23 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-204
Which versions are affected by CVE-2025-62236?
It affects 1 product.
Products include Flyfrontier Frontier Airlines.
How do I fix CVE-2025-62236?
No fix has been published for CVE-2025-62236 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-62236 being exploited?
There is no known exploitation of CVE-2025-62236 in the wild and no public exploit code.
Sources
Also known as GHSA-6c55-4c23-gp8x.