# MAL-2026-13916: Malicious code in @years20/n8n-nodes-utils-helper-g (npm)


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

## What is MAL-2026-13916?

MAL-2026-13916 is a malicious package in @years20/n8n-nodes-utils-helper-g, published on 12 Aug 2026. 

### Official description

On `npm install`, the package's postinstall script (duplicated in the main module) executes shell commands to collect host identity (`id`, `hostname`, `pwd`), locates n8n installation directories, enumerates running n8n processes, and reads n8n-related environment variables. The collected output is base64-encoded and sent via HTTPS GET to the hardcoded endpoint `https://jasabersama.id/portfolio-data.php` with TLS certificate validation disabled (`rejectUnauthorized: false`). The request includes a static key parameter `k=S7k9xQ2mZj` and a `c=` parameter containing a shell command payload (`echo <base64> | base64 -d >> /tmp/n8n_rce_result.txt`), and the endpoint filename plus payload shape indicate an RCE staging harness. The package's advertised utility helper purpose is a cover; the only substantive content is the install-time recon and beacon.

## What should I do about MAL-2026-13916?

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-2026-13916 is a malicious package: @years20/n8n-nodes-utils-helper-g (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-2026-13916/ (Markdown: https://insights.sbomify.com/MAL-2026-13916/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13916

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13916/
Summaries are generated and may contain mistakes; the official description above is the record.