# MAL-2026-16315: Malicious code in test1ro (npm)


- **Type:** Malicious package
- **Package:** `test1ro` (npm)
- **Published:** 21 Sep 2026

## What is MAL-2026-16315?

MAL-2026-16315 is a malicious package in test1ro, published on 21 Sep 2026. 

### Official description

package.json declares preinstall and postinstall hooks that run `node index.js`, which reads `os.hostname()` and issues an HTTP GET to the hardcoded third-party collector `http://eo8f3m3ho26a0nm.m.pipedream.net/<package>?h=<hostname>`. The behavior fires automatically during `npm install` without any user action, transmitting the installer's host identifier and the resolved package name to an external Pipedream request-bin. The manifest also declares `test1ro: ^999.99.99` as its own dependency at an implausibly high version, characteristic of a dependency-confusion artifact designed to be resolved from public npm ahead of an internal package of the same name. The generic name, self-referential high-version pin, and install-time beacon to an attacker-controlled collector match the standard dependency-confusion probe shape.

## What should I do about MAL-2026-16315?

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-2026-16315 is a malicious package: test1ro (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-2026-16315/ (Markdown: https://insights.sbomify.com/MAL-2026-16315/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16315

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-16315/
Summaries are generated and may contain mistakes; the official description above is the record.