CVE-2023-21515 Cross-site scripting in Galaxy Store

High 7.5 Published 26 May 2023 Updated 15 Jan 2025

Attackers can execute JavaScript to install APKs via vulnerable InstantPlay scripts in the Samsung Galaxy Store.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-21515?

CVE-2023-21515 is a high-severity cross-site scripting vulnerability in Samsung Mobile Galaxy Store, published on 26 May 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

InstantPlay which included vulnerable script which could execute javascript in Galaxy Store prior to version 4.5.49.8 allows attackers to execute javascript API to install APK from Galaxy Store.

Weakness: CWE-20

Which versions are affected by CVE-2023-21515?

It affects 1 product.

Products include Samsung Galaxy Store.

How do I fix CVE-2023-21515?

No fix has been published for CVE-2023-21515 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-21515 being exploited?

There is no known exploitation of CVE-2023-21515 in the wild and no public exploit code.

Sources

Also known as GHSA-6q4x-p962-hh53.