CVE-2026-14765 Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL
Attackers can execute arbitrary code via malicious URLs in Unreal Engine games due to insecure default URL scheme settings allowing file execution.
- 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-2026-14765?
CVE-2026-14765 is a high-severity vulnerability in Epic Games Unreal Engine, published on 14 Oct 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
Epic Games Unreal Engine versions up to and including 5.8.0 ship with an insecure default configuration for the LaunchURL Blueprint node (UKismetSystemLibrary::LaunchURL). The URL scheme filter (FURLRequestFilter) is empty by default, which permits all URL schemes. On Windows, this results in a call to ShellExecuteW() with the open verb, so a supplied file:/// URI causes the referenced file to be executed. Any Unreal Engine game that loads user-generated content containing Blueprints is vulnerable to command execution via a malicious local file or a remote file on a WebDAV share. This is an instance of CWE-1188 (Initialization of a Resource with an Insecure Default).
Weakness: CWE-1188
Which versions are affected by CVE-2026-14765?
How do I fix CVE-2026-14765?
No fix has been published for CVE-2026-14765 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-14765 being exploited?
There is no known exploitation of CVE-2026-14765 in the wild and no public exploit code.
Sources
Also known as GHSA-23f6-w88j-75xf.