CVE-2026-21036 Missing authorization in Samsung Internet

Medium 6.3 Published 5 Jun 2026 Updated 5 Jun 2026

Local attackers can access sensitive information due to improper authorization in the Samsung Internet browser.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-21036?

CVE-2026-21036 is a medium-severity missing authorization vulnerability in Samsung Internet, published on 5 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper authorization in Samsung Internet prior to version 30.0.0.39 allows local attackers to access sensitive information.

Weakness: CWE-863

Which versions are affected by CVE-2026-21036?

It affects 1 product.

Products include Samsung Internet.

How do I fix CVE-2026-21036?

No fix has been published for CVE-2026-21036 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-21036 being exploited?

There is no known exploitation of CVE-2026-21036 in the wild and no public exploit code.

Sources

Also known as GHSA-8mjw-wh53-grh9.