# MAL-2026-10390: Malicious code in timmytuffknuckles9 (npm)


- **Type:** Malicious package
- **Package:** `timmytuffknuckles9` (npm)
- **Published:** 13 Jul 2026
- **Also known as:** GHSA-mhfr-47mf-9gv9

## What is MAL-2026-10390?

MAL-2026-10390 is a malicious package in timmytuffknuckles9, published on 13 Jul 2026. 

### Official description

Package is not a Node library — `package.json` declares `main: sw.js`, a browser Service Worker whose first line calls `importScripts('./8cfc2/hgshm.js')`. `importScripts` is undefined in Node, so `require('timmytuffknuckles9')` throws immediately. No `preinstall`, `install`, `postinstall`, or `prepare` lifecycle scripts are declared, so `npm install` does not execute any package code. The tarball contains a bundled web app (a Lucide-style web proxy/unblocker) with heavily obfuscated JS assets and a popup ad redirect to `abdct.com`, but those run only inside a browser that loads the Service Worker — not on the developer's machine. Separately, the tarball ships `auto-publish.sh`, a helper that rewrites `package.json.name` in a loop to `timmytuffknuckles1` through `timmytuffknuckles10` and runs `npm publish` for each, evidence that the publisher is using npm as a hosting/CDN-style namespace and mass-publishing near-duplicate package names. This script is not wired to any lifecycle hook and does not run on install. Routing to human review for registry-hygiene assessment (off-purpose use of npm + namespace spam + heavily obfuscated bundled assets) rather than installer-harm.

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-2026-10390?

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-2026-10390 is a malicious package: timmytuffknuckles9 (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-2026-10390/ (Markdown: https://insights.sbomify.com/MAL-2026-10390/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10390

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-10390/
Summaries are generated and may contain mistakes; the official description above is the record.