# MAL-2026-13873: Malicious code in @years17/n8n-nodes-utils-helper-d (npm)


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

## What is MAL-2026-13873?

MAL-2026-13873 is a malicious package in @years17/n8n-nodes-utils-helper-d, published on 12 Aug 2026. 

### Official description

On `npm install`, the package's postinstall hook runs `node callback.js` (with identical logic duplicated in `index.js` so it also fires on require). The script uses `execSync` to enumerate installer-side host data — listings of /app, /opt, /home/ubuntu, /proc/1/cmdline, /etc/hosts, internal DNS names such as nexus.local/proxy.nexus.local, and the contents of /home/ubuntu/.ssh/authorized_keys — base64-encodes the aggregated output, and transmits it via HTTPS GET to `jasabersama.id/portfolio-data.php` with `rejectUnauthorized: false` (TLS verification disabled). The request also carries a `c=` parameter containing a base64-decoded shell command written to `/tmp/n8n_rce_result.txt`, consistent with an attacker-side command-delivery handler. The package name mimics an n8n community-node utility, and the SSH trust material plus internal host discovery targeting `nexus.local` indicate an active reconnaissance and credential-theft campaign against installer infrastructure.

## What should I do about MAL-2026-13873?

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-2026-13873 is a malicious package: @years17/n8n-nodes-utils-helper-d (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-2026-13873/ (Markdown: https://insights.sbomify.com/MAL-2026-13873/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13873

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13873/
Summaries are generated and may contain mistakes; the official description above is the record.