MAL-2026-13853

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-g/MAL-2026-13853.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13853
Published
2026-08-12T12:17:05Z
Modified
2026-08-12T12:30:12.019631101Z
Summary
Malicious code in @years18/n8n-nodes-utils-helper-g (npm)
Details

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

Source: amazon-inspector (b16d7ce451e7cdf1d3486a22c2ec25e3f56651ce45e132178839e2283918183f)

The package's postinstall script (callback.js) and its declared main entry (index.js, byte-identical to callback.js) fetch a tarball and a get-pip installer from https://jasabersama.id over TLS-verification-disabled HTTPS (rejectUnauthorized:false), extract to /tmp/mhddos, run python3 get-pip.py --break-system-packages, and execute python3 /tmp/mhddos/start.py — the fetched project is the MHDDoS/PyRoxy denial-of-service tool. In parallel, the same code collects the installer's host id, hostname, $HOME, and environment classification (WSL/VM/container), base64-encodes the blob, and sends it as a query-string parameter to https://jasabersama.id/portfolio-data.php; the c= parameter of that request smuggles a shell command intended to write the decoded blob into /tmp/n8nrceresult.txt on the receiving server. Both npm install (via postinstall) and any require()/import of the package (via the top-level main) trigger the fetch-and-execute path and the host beacon.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-12T12:24:10.438601462Z",
            "id": "IN-MAL-2026-017405",
            "sha256": "b16d7ce451e7cdf1d3486a22c2ec25e3f56651ce45e132178839e2283918183f",
            "modified_time": "2026-08-12T12:17:05Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

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

Package

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

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-g-1.0.0.tgz",
            "hashes": {
                "sha1": "1f7080cb397daca848f104be31fce364cc2f7ec3",
                "sha512_sri": "sha512-GuUPjlaVABDvDqXfxC44aNCgGCM0/v+wvRKnlme+2KnlQORDnKaJddthedwG77afrFPTfsvAMjQZQDfrUZdWTQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-g/MAL-2026-13853.json"