CVE-2026-47311 Memory corruption in Escargot

High 7.8 Published 19 May 2026 Updated 19 May 2026

Heap-based buffer overflow in Samsung Escargot JavaScript engine allows attackers to execute arbitrary code or cause denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-47311?

CVE-2026-47311 is a high-severity memory corruption vulnerability in Samsung Open Source Escargot, published on 19 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Heap-based buffer overflow vulnerability in Samsung Open Source Escargot allows Overflow Buffers.

This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.

Weakness: CWE-122

Which versions are affected by CVE-2026-47311?

It affects 1 product.

Products include Samsung Escargot.

How do I fix CVE-2026-47311?

No fix has been published for CVE-2026-47311 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-47311 being exploited?

There is no known exploitation of CVE-2026-47311 in the wild and no public exploit code.

Sources

Also known as GHSA-g7q7-7hc8-vc6w.