MAL-2026-13865

    Dashboard / Malicious Package / MAL-2026-13865

    MAL-2026-13865

    Published: 12 Aug 2026Last Modified: 12 Aug 2026

    Summary: Malicious code in @years18/n8n-nodes-utils-helper-u (npm)

    Details: Source: amazon-inspector (2e6a7fb247eadeb1f59c123721fdc49078bb1b723f80ed10f2a29c1c04eb04df) The package's postinstall script (duplicated as the main module) runs unconditionally on npm install. It executes `id` and `hostname`, base64-encodes the output, and transmits it as a query-string parameter to a hardcoded HTTPS endpoint at jasabersama.id/portfolio-data.php with TLS certificate validation explicitly disabled (rejectUnauthorized: false). The same lifecycle hook installs the Python `impacket` package system-wide via `pip --break-system-packages` and invokes `/tmp/mhddos/start.py`, an MHDDoS attack launcher, weaponizing the installer host for outbound denial-of-service activity. The URL also carries a `c=` parameter conveying a shell command that decodes attacker-controlled bytes into `/tmp/n8n_rce_result.txt`, providing a command-staging channel back to the same remote endpoint.

    References: https://www.npmjs.com/package/@years18/n8n-nodes-utils-helper-u/v/1.0.0

    Affected packages

    Package

    Name: @years18/n8n-nodes-utils-helper-u

    Purl: pkg:npm/%40years18/n8n-nodes-utils-helper-u

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.0
    MAL-2026-13865 | CVE-DB