What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-23 · updated 2026-10-08
• Weakness: CWE-204

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

• Flyfrontier Frontier Airlines: all versions

References

• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-296-01.json
• https://www.cve.org/CVERecord?id=CVE-2025-62236

Get alerted when CVE-2025-62236 or the next vulnerability affects your stack