MAL-2026-13894

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-k/MAL-2026-13894.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13894
Published
2026-08-12T15:09:21Z
Modified
2026-08-12T15:30:16.211763972Z
Summary
Malicious code in @years19/n8n-nodes-utils-helper-k (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (5f2ee90541bcb630e80a800d961efa8a534f59200943e7aa09c57f8d4972157f)

The package's postinstall script callback.js — duplicated byte-for-byte as index.js declared as the package main — fetches multiple tarballs (mhddos, PyRoxy, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ with TLS verification disabled, unpacks them into /tmp and the user's Python site-packages, and executes python3 start.py to launch UDP/TCP/GET flood traffic against 103.118.252.21. The same chain also collects the installer's id and hostname command output, base64-encodes it, and transmits it as a GET query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled. Both triggers fire without user interaction: the postinstall hook runs on npm install, and the identical main entry re-runs the chain on require/import (including when n8n loads this as a community node). The package presents as an n8n utility helper but ships no such functionality; its only behavior is dropping and executing attacker-hosted DDoS tooling while beaconing host identity to the attacker's C2.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-12T15:26:12.626836669Z",
            "id": "IN-MAL-2026-017592",
            "sha256": "5f2ee90541bcb630e80a800d961efa8a534f59200943e7aa09c57f8d4972157f",
            "modified_time": "2026-08-12T15:09:21Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @years19/n8n-nodes-utils-helper-k

Package

Name
@years19/n8n-nodes-utils-helper-k
View open source insights on deps.dev
Purl
pkg:npm/%40years19/n8n-nodes-utils-helper-k

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-k/MAL-2026-13894.json"
indicators 
{
    "evidence_files": [
        {
            "path": "callback.js",
            "tlsh": "1b51a6f51521913c003311289f17e879e32fa20798a0fdd9fa8e56725f0161cd64fb78",
            "sha256": "47924dadac91aeda94104bb167a64e883a3a149ca2b795eabef9c6caef32bafd"
        },
        {
            "path": "index.js",
            "tlsh": "1b51a6f51521913c003311289f17e879e32fa20798a0fdd9fa8e56725f0161cd64fb78",
            "sha256": "47924dadac91aeda94104bb167a64e883a3a149ca2b795eabef9c6caef32bafd"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-k-1.0.0.tgz",
            "hashes": {
                "sha1": "903f62ad8baf53c8dc2d629c12e586fea840762f",
                "sha512_sri": "sha512-MIBuU2EoqpRA7f8yVgrlhoPK1BpkXWIRZeO8+dMifDjNRCIyTxF7PKNEhEag4TpM0oQKvqeypJSxS9o7QrQVPA=="
            }
        }
    ]
}