[ CVE-2026-120987 · Published 3 Nov 2026 ]

Vulnerability in NAVER Whale browser

Not scored yet EPSS <1%No fix listed yet

[ Description ]Official description

Whale Browser before 5.39.412.57 allows an attacker to bypass the iframe sandbox in a dual-tab environment.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.