# MAL-2026-13893: Malicious code in @years19/n8n-nodes-utils-helper-j (npm)


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

## What is MAL-2026-13893?

MAL-2026-13893 is a malicious package in @years19/n8n-nodes-utils-helper-j, published on 12 Aug 2026. 

### Official description

package.json postinstall runs callback.js, and index.js (declared main) is byte-identical, so both `npm install` and any `require()` of the package trigger the same payload. The code fetches multiple tarballs (mhddos, PyRoxy, impacket, multidict) from https://jasabersama.id over TLS with certificate verification disabled (rejectUnauthorized:false), extracts them into /tmp and the user's site-packages, and spawns python3 processes that flood a hardcoded target at 103.118.252.21 with UDP/TCP/HTTP traffic. In parallel, callback.js collects the output of `id` and `hostname`, dependency status, and attack log tails, base64-encodes them, and sends them as a query parameter to https://jasabersama.id/portfolio-data.php; the `c` parameter is also shaped as a shell command for the receiving endpoint. Disabling TLS verification and pinning nothing makes the transport resilient to substitution of the attacker host's certificate. Installing or importing this package turns the host into a DDoS bot under the installer's user account and leaks host identity to the attacker endpoint.

## What should I do about MAL-2026-13893?

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-2026-13893 is a malicious package: @years19/n8n-nodes-utils-helper-j (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-2026-13893/ (Markdown: https://insights.sbomify.com/MAL-2026-13893/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13893

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13893/
Summaries are generated and may contain mistakes; the official description above is the record.