# MAL-2026-4421: Malicious code in @pulse-web-platform-core/scripts-loader (npm)


- **Type:** Malicious package
- **Package:** `@pulse-web-platform-core/scripts-loader` (npm)
- **Published:** 21 May 2026
- **Also known as:** GHSA-f75f-hrx6-f8qh

## What is MAL-2026-4421?

MAL-2026-4421 is a malicious package in @pulse-web-platform-core/scripts-loader, published on 21 May 2026. 

### Official description

On `npm install`, the package's preinstall.js performs an HTTP GET to `http://${pkg}.${scope}.oob.moika.tech/poc.js` and passes the response body directly to `eval()` with no integrity verification. The URL embeds the installing package's scope and name as DNS subdomains of `oob.moika.tech`, causing the installer's resolver and the remote server to receive the target's scope/package context as an out-of-band beacon before any code runs. The fetched payload then executes with the installer's privileges; an in-source comment indicates intent to collect `whoami`, `hostname`, `ifconfig`, and `/etc/passwd` output. The package metadata (`keywords: ["bug bounty"]`, version `99.99.7`, generic description `k2 cloud utilities`, scope `@pulse-web-platform-core`) is consistent with a dependency-confusion probe targeting an internal scope, but the install-time behavior is indistinguishable from a malicious supply-chain attack: every installer who pulls this package — whether deliberately or via name-confusion — executes attacker-controlled remote code over unauthenticated HTTP.

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-2026-4421?

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-2026-4421 is a malicious package: @pulse-web-platform-core/scripts-loader (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-2026-4421/ (Markdown: https://insights.sbomify.com/MAL-2026-4421/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-4421

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-4421/
Summaries are generated and may contain mistakes; the official description above is the record.