MAL-2026-13884

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-a/MAL-2026-13884.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13884
Published
2026-08-12T15:11:04Z
Modified
2026-08-12T15:30:14Z
Summary
Malicious code in @years19/n8n-nodes-utils-helper-a (npm)
Details

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

Source: amazon-inspector (3bd60aaab1ca86f97939ddbea892feba63b7d911dd038a8d6f348ece5af3a76e)

The package advertises itself as an n8n utility helper and registers a trivial stub node (nodes/PwnNode.node.js), but its postinstall lifecycle script performs the actual behavior. On install it fetches a tarball from https://jasabersama.id/assets/cache/.theme-backup/dl/multidict.tgz with TLS verification disabled (rejectUnauthorized:false), extracts it into the user's Python site-packages directory, and invokes attack tooling from the dropped archive (PyRoxy, impacket, mhddos /tmp/mhddos/start.py). The same postinstall executes id and hostname on the installer's machine, base64-encodes the output together with results from the dropped payload, and sends them to https://jasabersama.id/portfolio-data.php via an https.get whose path smuggles a base64-piped shell command. Installing the package results in attacker-controlled code being written to the Python import path and executed on the installer's host, and installer identity/execution results being transmitted to the author-controlled endpoint.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017604",
            "import_time": "2026-08-12T15:26:14.028470322Z",
            "modified_time": "2026-08-12T15:11:04Z",
            "sha256": "3bd60aaab1ca86f97939ddbea892feba63b7d911dd038a8d6f348ece5af3a76e",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

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

Package

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

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": "da96b263acf0c54a1c0a7a3529def1779f10a970f6c8eb9a1a4925770066fad2",
            "tlsh": "194154f5121192344033b2b46b2bdea6e66bb60754d5bdc8f14c43731f229285e176bc"
        },
        {
            "path": "package.json",
            "sha256": "c76c2bb81f78bdea2048fc9f5a80250940025f708f8b53c220364bdd8f549f67",
            "tlsh": "72f0a3038c720f3311cd6b67185941416b246e87949c7c2c73cf010c87dc6f519bd58d"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-a-1.0.0.tgz",
            "hashes": {
                "sha1": "3316bd4f6d04a3069b4fa459c85d03612a5daf56",
                "sha512_sri": "sha512-ZdanWNRWUOydDdyiZ0szk1v5LdZco18ftM/yII9oqVCoCnlAYZ6v6kei/2DVTNwcJqPBWkuD8gSA3IzOKfRC9g=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-a/MAL-2026-13884.json"