# 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.

- **Severity:** High 7.7 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **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 available:** No
- **Published:** 14 Oct 2026
- **Updated:** 18 Oct 2026
- **Also known as:** GHSA-23f6-w88j-75xf

## 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 (Initialization of a Resource with an Insecure Default)

## 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.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14765 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-14765 in the wild and no public exploit code.

Affected product: Epic Games Unreal Engine. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14765/ (Markdown: https://insights.sbomify.com/CVE-2026-14765/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14765
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14765
- OSV: https://osv.dev/vulnerability/CVE-2026-14765

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14765/
Summaries are generated and may contain mistakes; the official description above is the record.