CVE-2026-120987 | BDVDB-2026-399698 Detail

NAVERNAVER Whale browser

Description#

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

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.

No public exploit known

7.5 High

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 3.8.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Not classified

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).