---
id: CVE-2025-69234
title: >-
  Whale browser before 4.35.351.12 allows an attacker to escape the iframe
  sandbox in a sidebar environment.
summary: >-
  Whale browser before 4.35.351.12 allows an attacker to escape the iframe
  sandbox in a sidebar environment.
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-358
vendor: navercorp
product: whale
affected:
  - whale < 4.35.351.12
patched:
  - whale 4.35.351.12
published: '2025-12-30'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T17:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-69234'
references:
  - url: 'https://cve.naver.com/detail/cve-2025-69234.html'
    label: cve@navercorp.com
tags:
  - nvd
epss: 0.00291
epssPercentile: 0.19688
ingestedAt: '2026-10-05T17:27:45.016Z'
---

## Overview

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

## Affected

- `whale < 4.35.351.12`

## Remediation

Upgrade past the affected range:

- `whale 4.35.351.12`