# MAL-2026-13899: Malicious code in @years19/n8n-nodes-utils-helper-p (npm)


- **Type:** Malicious package
- **Package:** `@years19/n8n-nodes-utils-helper-p` (npm)
- **Published:** 12 Aug 2026

## What is MAL-2026-13899?

MAL-2026-13899 is a malicious package in @years19/n8n-nodes-utils-helper-p, published on 12 Aug 2026. 

### Official description

On npm install (postinstall) and on require of the main entry index.js, the package fetches multiple tarballs (mhddos, pyroxy-full, impacket, multidict) from jasabersama.id over an HTTPS connection with TLS verification disabled, extracts them to /tmp and the Python user site-packages directory, and launches three background python3 processes running mhddos against the hardcoded target 103.118.252.21 (UDP:80, TCP:443, GET:80 for 600 seconds). callback.js and index.js are byte-identical, so the payload fires both from the postinstall lifecycle and from require/import when n8n loads the community node, defeating --ignore-scripts. The script additionally collects `id` and `hostname` output plus attack-process status, base64-encodes them, and sends them via GET to https://jasabersama.id/portfolio-data.php with a `k=` key and a `c=` parameter that carries a shell command (`echo <b64> | base64 -d >> /tmp/n8n_rce_result.txt`), providing a reporting/command channel to the operator.

## What should I do about MAL-2026-13899?

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-2026-13899 is a malicious package: @years19/n8n-nodes-utils-helper-p (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-2026-13899/ (Markdown: https://insights.sbomify.com/MAL-2026-13899/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13899

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13899/
Summaries are generated and may contain mistakes; the official description above is the record.