MAL-2026-13883

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-y/MAL-2026-13883.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13883
Published
2026-08-12T15:11:13Z
Modified
2026-08-12T15:30:12Z
Summary
Malicious code in @years18/n8n-nodes-utils-helper-y (npm)
Details

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

Source: amazon-inspector (d1342694c7cf44fdd451ec464ebcee8acca8523770f147805b8b3c4a7ae225fa)

The package's postinstall hook (node callback.js) fetches three tarballs (mhddos, pyroxy-full, impacket) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over HTTPS with TLS verification disabled (rejectUnauthorized:false), extracts pyroxy-full and impacket into the invoking user's Python site-packages, stages mhddos under /tmp, and executes python3 start.py from the extracted mhddos toolkit. Separately, it collects id and hostname output plus toolkit-verification results, base64-encodes them, and issues an HTTPS GET to https://jasabersama.id/portfolio-data.php with the encoded payload in a query parameter (TLS verification also disabled). Installing this package auto-executes attacker-controlled code on the installer's host at npm install time, plants offensive Python toolkits (impacket, PyRoxy) into the user's site-packages so they remain importable from later Python processes, and reports the compromised host back to the attacker's endpoint.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017605",
            "import_time": "2026-08-12T15:26:14.090668111Z",
            "modified_time": "2026-08-12T15:11:13Z",
            "sha256": "d1342694c7cf44fdd451ec464ebcee8acca8523770f147805b8b3c4a7ae225fa",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

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

Package

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

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "callback.js",
            "sha256": "4ec5b14887ecc30e083dbfcb89b970b7bca2e0c4d83f6c8b37ef264940b366e7",
            "tlsh": "fd41b6b91251513d403372686f2bdd3aea6f720344d4b9c8fa4d47b35b0152c4a9ff68"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-y-1.0.0.tgz",
            "hashes": {
                "sha1": "a8cd85cef3553fe98e092507f9dee3ad126e0de0",
                "sha512_sri": "sha512-LPayyR8OqNj5Rv8g+p7uenvvfZXUdH6OkcOQVSsnnOqT1uLPHNRW2z8c02/aENquomrusdtljaFKiowuQ7AMNQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-y/MAL-2026-13883.json"