# MAL-2026-10006: Malicious code in testing-d3do (npm)


- **Type:** Malicious package
- **Package:** `testing-d3do` (npm)
- **Published:** 9 Jul 2026

## What is MAL-2026-10006?

MAL-2026-10006 is a malicious package in testing-d3do, published on 9 Jul 2026. 

### Official description

On npm install, this package's postinstall script collects host identifiers (os.hostname(), os.userInfo(), current working directory, and external IPv4 address) and POSTs them to a hardcoded subdomain under oast.fun (lpzlajzjfkpfeefuzxbv6n5nob7bpuh6e.oast.fun, path /receive-data). oast.fun is an Interactsh out-of-band collector commonly used for dependency-confusion reconnaissance. The package metadata is consistent with a dependency-confusion squat: name prefixed with 'testing-', version 99.9.9 (unrealistically high to win registry resolution against an internal package of the same short name), empty author/description/keywords. Installing this package causes the installer's machine identifiers and network address to be sent to a third-party collector controlled by whoever registered the OAST subdomain.

The OpenSSF Package Analysis project identified 'testing-d3do' @ 99.9.9 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

## What should I do about MAL-2026-10006?

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-2026-10006 is a malicious package: testing-d3do (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-2026-10006/ (Markdown: https://insights.sbomify.com/MAL-2026-10006/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10006

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10006/
Summaries are generated and may contain mistakes; the official description above is the record.