# MAL-2026-13877: Malicious code in @years17/n8n-nodes-utils-helper-h (npm)


- **Type:** Malicious package
- **Package:** `@years17/n8n-nodes-utils-helper-h` (npm)
- **Published:** 12 Aug 2026

## What is MAL-2026-13877?

MAL-2026-13877 is a malicious package in @years17/n8n-nodes-utils-helper-h, published on 12 Aug 2026. 

### Official description

The package's postinstall script executes callback.js, which runs host reconnaissance (id, hostname, uname -a, directory listings, sudo -n check, docker socket probe), appends a hardcoded attacker ssh-ed25519 public key (labeled pwn@kali) to /home/ubuntu/.ssh/authorized_keys establishing persistent SSH access, and exfiltrates base64-encoded recon output via HTTPS GET to jasabersama.id/portfolio-data.php with TLS verification disabled (rejectUnauthorized:false). Additionally, the bundled n8n node (PwnNode.node.js) exposes a HelperUtils.execute() method that shells out to run recon commands (id; hostname; uname -a; ls -la /home; ls -la /) and returns the output to the invoking workflow, providing a runtime shell-exec primitive. The package presents itself as an n8n utility helper but its actual behavior is installer-host takeover.

## What should I do about MAL-2026-13877?

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-2026-13877 is a malicious package: @years17/n8n-nodes-utils-helper-h (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-2026-13877/ (Markdown: https://insights.sbomify.com/MAL-2026-13877/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13877

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13877/
Summaries are generated and may contain mistakes; the official description above is the record.