# CVE-2026-109422: NetEase Cloud Music RCE via os.navigateExternal IPC

> Attackers can execute arbitrary code by injecting content into the renderer process to trigger unsafe IPC calls that launch local binaries via ShellExecuteW.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Oct 2026
- **Updated:** 26 Oct 2026
- **Also known as:** GHSA-8rjw-mvfx-hpfv

## What is CVE-2026-109422?

CVE-2026-109422 is a critical code injection vulnerability in NetEase Cloud Music for Windows, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

NetEase Cloud Music client for Windows (cloudmusic.exe) versions 3.1.38 and 3.1.39.205426 contains a remote code execution vulnerability in the renderer-process IPC bridge os.navigateExternal, which passes caller-supplied URLs to ShellExecuteW without validating the URL scheme. An attacker able to inject content into the renderer, such as by forging the /pc/upgrade/get API response using a publicly known AES key over an unvalidated TLS connection, can invoke os.navigateExternal with a file:// URL through an img onerror payload to execute arbitrary local binaries under the logged-in user's account.

Weakness: CWE-749 (Exposed Dangerous Method or Function)

## Which versions are affected by CVE-2026-109422?


## How do I fix CVE-2026-109422?

No fix has been published for CVE-2026-109422 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-109422 being exploited?

There is no known exploitation of CVE-2026-109422 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-109422 and fix it if it is affected.

What it is: CVE-2026-109422 is a critical code injection vulnerability in NetEase Cloud Music for Windows, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-109422 in the wild and no public exploit code.

Affected product: NetEase Cloud Music for Windows. 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-2026-109422/ (Markdown: https://insights.sbomify.com/CVE-2026-109422/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-109422
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-109422
- OSV: https://osv.dev/vulnerability/CVE-2026-109422

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-109422/
Summaries are generated and may contain mistakes; the official description above is the record.