# MAL-2026-13910: Malicious code in @years20/n8n-nodes-utils-helper-b (npm)


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

## What is MAL-2026-13910?

MAL-2026-13910 is a malicious package in @years20/n8n-nodes-utils-helper-b, published on 12 Aug 2026. 

### Official description

On npm install (postinstall) and on require/import of the package's main entry, callback.js and index.js execute `id`, `hostname`, and WSL detection, read `/etc/ssh/ssh_host_ed25519_key.pub`, base64-encode the collected data, and GET it to `https://jasabersama.id/portfolio-data.php?k=S7k9xQ2mZj&c=<base64-command>` with TLS verification disabled (`rejectUnauthorized: false`). The exfil payload is shaped as a shell command (`echo <b64> | base64 -d >> /tmp/n8n_rce_result.txt`) consistent with a replayable C2 handler. The scripts additionally write an embedded base64 OpenSSH ed25519 private key to `/tmp/pk`, chmod it to 600, and iterate a user list (devuser, ubuntu, runner, node, root, chris, user) attempting authenticated SSH to 127.0.0.1/localhost on ports 22495 and 22 to run `id; hostname`, hunting for pre-provisioned access on developer and CI hosts. Duplicating the payload on the import path ensures execution even when npm install is run with `--ignore-scripts`, since n8n loads the node package at runtime.

## What should I do about MAL-2026-13910?

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-2026-13910 is a malicious package: @years20/n8n-nodes-utils-helper-b (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-2026-13910/ (Markdown: https://insights.sbomify.com/MAL-2026-13910/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13910

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13910/
Summaries are generated and may contain mistakes; the official description above is the record.