CVE-2026-47312 Use after free in Escargot

Medium 5.5 Published 19 May 2026 Updated 19 May 2026

A use-after-free vulnerability in the Escargot JavaScript engine allows attackers to manipulate buffers, potentially leading to code execution or crashes.

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-2026-47312?

CVE-2026-47312 is a medium-severity use after free 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

Release of invalid pointer or reference vulnerability in Samsung Open Source Escargot allows Buffer Manipulation.

This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.

Weakness: CWE-763

Which versions are affected by CVE-2026-47312?

It affects 1 product.

Products include Samsung Escargot.

How do I fix CVE-2026-47312?

No fix has been published for CVE-2026-47312 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-47312 being exploited?

There is no known exploitation of CVE-2026-47312 in the wild and no public exploit code.

Sources

Also known as GHSA-3hmv-xgq6-6pp3.