# MAL-2026-10389: Malicious code in timmytuffknuckles6 (npm)


- **Type:** Malicious package
- **Package:** `timmytuffknuckles6` (npm)
- **Published:** 13 Jul 2026
- **Also known as:** GHSA-5m8p-jhm5-pm44

## What is MAL-2026-10389?

MAL-2026-10389 is a malicious package in timmytuffknuckles6, published on 13 Jul 2026. 

### Official description

This package is not a Node.js library. `package.json` declares `"main": "sw.js"`, a Service Worker that calls `importScripts('./8cfc2/hgshm.js')` — an API that does not exist in Node, so `require('timmytuffknuckles6')` throws immediately and the bundled obfuscated assets never execute on the installer's machine. The tarball contents are a school-unblocker / bare-mux web proxy bundle (index.html, multiple obfuscated `assets/*.js` files, WASM) wrapped in a `Riverbend Tutoring` cover page that, when served and visited in a browser, loads third-party scripts and opens popunders to external sites. There are no `preinstall`/`install`/`postinstall` lifecycle scripts, and no top-level Node-reachable code path that runs on install or require. The repository also ships `auto-publish.sh`, an author-run loop that rewrites `package.json.name` to `timmytuffknuckles1`..`timmytuffknuckles10` and republishes the same payload under each name, polluting the npm namespace with ten clones. The script is not a lifecycle hook and does not run on install. The heavy obfuscation in `assets/*.js` is consistent with the Ultraviolet/bare-mux proxy framework these projects use, not with installer-side harm. Routing to human review because the package is registry-misuse (proxy webapp masquerading as an npm library, plus deliberate ten-name namespace squatting) even though it does not attack installers.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-10389?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-10389 is a malicious package: timmytuffknuckles6 (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-10389/ (Markdown: https://insights.sbomify.com/MAL-2026-10389/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10389

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10389/
Summaries are generated and may contain mistakes; the official description above is the record.