CVE-2026-14765
Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL
- State
- Published
- Severity
- 7.7 High
- Published
- Oct 14, 2026
- Updated
- Oct 18, 2026
- Reserved
- Jul 4, 2026
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).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.7 High | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H | AHA |
Weaknesses
- CWE-1188 Initialization of a Resource with an Insecure Default
Affected Products
| Product | Versions |
|---|---|
Unreal EngineEpic Games |
|
References
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