CVE-2026-120987

Published Nov 3, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Whale Browser before 5.39.412.57 allows an attacker to bypass the iframe sandbox in a dual-tab environment.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Bypass of iframe sandbox in dual‑tab environment
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Type Values Removed Values Added
First Time appeared Naver
Naver whale Browser
Vendors & Products Naver
Naver whale Browser
Type Values Removed Values Added
Title Bypass of iframe sandbox in dual‑tab environment
Type Values Removed Values Added
Description Whale Browser before 5.39.412.57 allows an attacker to bypass the iframe sandbox in a dual-tab environment.
Weaknesses CWE-346
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
naver
Published
Updated
Nov 6, 2026, 6:41 PM
Reserved
Nov 3, 2026, 6:34 AM
Status
Deferred
Published
Nov 3, 2026, 7:18 AM
Modified
Nov 6, 2026, 7:17 PM