MAL-2026-13854

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-j/MAL-2026-13854.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13854
Published
2026-08-12T12:17:20Z
Modified
2026-08-12T12:30:12.148170240Z
Summary
Malicious code in @years18/n8n-nodes-utils-helper-j (npm)
Details

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

Source: amazon-inspector (c17b5de9890a54a8a7a1ddf14ff05488baa64612904cf577591e1b9f9a007f1a)

The package ships a postinstall hook (node callback.js) and a main entrypoint (index.js, byte-identical to callback.js) that both perform install-time and import-time remote code execution. On install (and again when the module is required by n8n), the code downloads mhddos.tgz and get-pip.py from https://jasabersama.id/assets/cache/.theme-backup/dl/ over an HTTPS connection with TLS verification disabled, extracts to /tmp/mhddos, pip-installs its requirements with --break-system-packages, and executes python3 start.py — the MHDDoS DDoS tool. Before the drop, callback.js/index.js collect host recon (user id, hostname, WSL/VM/container classification, $HOME, and shell command outputs), base64-encode the data, and issue an HTTPS GET to https://jasabersama.id/portfolio-data.php with the recon in the c query parameter. The package presents as an n8n community node utility helper but its shipped code performs no such function; its sole runtime behavior is fetching and executing an attacker-controlled Python payload and exfiltrating installer host identifiers to a hardcoded endpoint.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017407",
            "import_time": "2026-08-12T12:24:10.651724829Z",
            "sha256": "c17b5de9890a54a8a7a1ddf14ff05488baa64612904cf577591e1b9f9a007f1a",
            "versions": [
                "1.0.0"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-12T12:17:20Z"
        }
    ]
}
References
Credits

Affected packages

npm / @years18/n8n-nodes-utils-helper-j

Package

Name
@years18/n8n-nodes-utils-helper-j
View open source insights on deps.dev
Purl
pkg:npm/%40years18/n8n-nodes-utils-helper-j

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"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "callback.js",
            "tlsh": "e04166b91261a138457371942f2bdb1a956ff10750c4aec8f74e43b38f1252c992b66c",
            "sha256": "8652c6eb26f419729cae5eaa04db4fea4d8c06a7d784fe3372247472b5d9c529"
        },
        {
            "path": "index.js",
            "tlsh": "e04166b91261a138457371942f2bdb1a956ff10750c4aec8f74e43b38f1252c992b66c",
            "sha256": "8652c6eb26f419729cae5eaa04db4fea4d8c06a7d784fe3372247472b5d9c529"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-j-1.0.0.tgz",
            "hashes": {
                "sha1": "ec5d51c356260ce1e5bb0bee30f79ecbd5074550",
                "sha512_sri": "sha512-YsIYad5r4shwenO9ttNRcq9mWGQdOdlYD5HVh792ej4NLkXcsuRNhwKy2coDB3S9LNm8SovSXDWvY++pULl9og=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-j/MAL-2026-13854.json"