# MAL-2026-10403: Malicious code in @iana-rzms/bff-sdk (npm)


- **Type:** Malicious package
- **Package:** `@iana-rzms/bff-sdk` (npm)
- **Published:** 13 Jul 2026

## What is MAL-2026-10403?

MAL-2026-10403 is a malicious package in @iana-rzms/bff-sdk, published on 13 Jul 2026. 

### Official description

Package published to the public @iana-rzms scope as a dependency-confusion squat targeting an internal ICANN namespace. The preinstall lifecycle script runs automatically on npm install and collects the installer's hostname, OS username, and current working directory, base64-encodes them, and transmits them via HTTPS (port 443), HTTP (port 80), and DNS lookup to the hardcoded external host k4pzh6vg78iub3vxqhmml2q8wz2qqge5.oastify.com (a Burp Collaborator subdomain). The self-described 'authorized PoC' framing in the README does not change installer-side impact: any build that resolves @iana-rzms/bff-sdk from the public registry executes attacker/researcher-controlled code at install time and leaks host identity to a non-first-party collector.

## What should I do about MAL-2026-10403?

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-2026-10403 is a malicious package: @iana-rzms/bff-sdk (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-2026-10403/ (Markdown: https://insights.sbomify.com/MAL-2026-10403/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10403

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10403/
Summaries are generated and may contain mistakes; the official description above is the record.