CVE-2025-53599: Navercorp Whale

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Whale browser for iOS before 3.9.1.4206 allow an attacker to execute malicious scripts in the browser via a crafted javascript scheme.

Affected products

• Navercorp Whale: before 3.9.1.4206 (fixed in 3.9.1.4206)

Published 2025-07-04. Last modified 2026-06-17.