---
id: CVE-2026-14765
title: >-
  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)
summary: >-
  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, wh…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-1188
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T03:17:21.927'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14765'
references:
  - url: 'https://khaelkugler.com/blogs/meccha_chameleon.html'
    label: cve@takeonme.org
  - url: >-
      https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001011111111101111111111110000000000000000000000000000000000000000000000000000001011
    label: cve@takeonme.org
tags:
  - nvd
ingestedAt: '2026-10-14T04:12:54.304Z'
---

## Overview

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).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.