CVE-2025-69234: Navercorp Whale

Critical severity, CVSS 9.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Whale browser before 4.35.351.12 allows an attacker to escape the iframe sandbox in a sidebar environment.

Affected products

• Navercorp Whale: before 4.35.351.12 (fixed in 4.35.351.12)

Published 2025-12-30. Last modified 2026-10-07.