# MAL-2026-13913: Malicious code in @years20/n8n-nodes-utils-helper-e (npm)


- **Type:** Malicious package
- **Package:** `@years20/n8n-nodes-utils-helper-e` (npm)
- **Published:** 12 Aug 2026

## What is MAL-2026-13913?

MAL-2026-13913 is a malicious package in @years20/n8n-nodes-utils-helper-e, published on 12 Aug 2026. 

### Official description

The package presents as an n8n community-nodes helper but ships a malicious postinstall script (callback.js) and a byte-identical main entrypoint (index.js) that fire on `npm install` and on module load. The script runs `id`, `hostname`, and WSL detection, reads the host SSH public key fingerprint from /etc/ssh/ssh_host_ed25519_key.pub, base64-encodes the collected data, and sends it via HTTPS GET to jasabersama.id/portfolio-data.php with TLS verification disabled (`rejectUnauthorized: false`). It also decodes a bundled OpenSSH ed25519 private key to /tmp/pk (chmod 600) and iterates `ssh -i /tmp/pk` login attempts against 127.0.0.1/localhost on ports 22495 and 22 as devuser/ubuntu/runner/node/root/chris/user, executing `id; hostname` on any account that accepts the key. The C2 URL path `/portfolio-data.php?k=S7k9xQ2mZj&c=<url-encoded shell command>` is shaped as a command channel, indicating the endpoint is dual-use exfiltration and remote-execution infrastructure.

## What should I do about MAL-2026-13913?

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-2026-13913 is a malicious package: @years20/n8n-nodes-utils-helper-e (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-2026-13913/ (Markdown: https://insights.sbomify.com/MAL-2026-13913/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13913

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13913/
Summaries are generated and may contain mistakes; the official description above is the record.