# MAL-2026-16344: Malicious code in sorrawit-dev-helper (npm)


- **Type:** Malicious package
- **Package:** `sorrawit-dev-helper` (npm)
- **Published:** 21 Sep 2026

## What is MAL-2026-16344?

MAL-2026-16344 is a malicious package in sorrawit-dev-helper, published on 21 Sep 2026. 

### Official description

package.json declares a postinstall lifecycle script that runs automatically on `npm install`. The script reads /tmp/flag.txt from the installer's machine and sends its URL-encoded contents as a query parameter to a hardcoded ngrok tunnel at https://ca37-49-237-83-218.ngrok-free.app/. The destination is an ephemeral tunnel host unrelated to any legitimate publisher, and the read+exfil fires without user interaction. The behavior matches install-time credential/file exfiltration with a concrete installer-side data source and a concrete attacker-controlled destination.

## What should I do about MAL-2026-16344?

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-2026-16344 is a malicious package: sorrawit-dev-helper (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-2026-16344/ (Markdown: https://insights.sbomify.com/MAL-2026-16344/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16344

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-16344/
Summaries are generated and may contain mistakes; the official description above is the record.