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CVE-2025-69234

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

9.1 Critical

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

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.29%Up 0.3 points since Dec 30, 2025
90%50%10%1%

What each source reports

CVE List Score used 9.1

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

Record
CVE-2025-69234
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-358
Updated
2026-11-02
EUVDEUVD-2025-205677 9.1

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

Record
EUVD-2025-205677
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-rhh9-qf7p-wfgf 9.1

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

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

Record
GHSA-rhh9-qf7p-wfgf
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-358
Updated
2026-11-02
NVD 9.1

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

Record
CVE-2025-69234
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-358
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-69234 is a critical vulnerability (CVSS 9.1) in Naver Whale Browser, published December 30, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. No source names a fixed version.

References

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