MAL-2026-13904

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-u/MAL-2026-13904.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13904
Published
2026-08-12T15:08:06Z
Modified
2026-08-12T15:30:15Z
Summary
Malicious code in @years19/n8n-nodes-utils-helper-u (npm)
Details

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

Source: amazon-inspector (c82adb424b76ab7db887024cb8608a8e7aa3b942797ba38a3eef74fa36c249e5)

The package's postinstall hook (callback.js) and its declared main entry (index.js, byte-identical to callback.js) both write a Python script to /tmp/attack.py and spawn it via nohup python3 /tmp/attack.py... &. The script launches hundreds of UDP/TCP flood threads against the hardcoded target 103.118.252.21 for 600 seconds, turning the installer's host into a DDoS source against a third party. After launching the flood, the code collects host identifiers (id, hostname, running process count, /proc/loadavg), base64-encodes them, and issues an HTTPS GET to jasabersama.id/portfolio-data.php with query parameters k=S7k9xQ2mZj&c=<base64>, with TLS certificate verification disabled (rejectUnauthorized: false). Because index.js is the module's main entry, the same dropper also fires whenever the package is required — for example when loaded as an n8n community node — in addition to firing on npm install via the postinstall lifecycle hook.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017583",
            "import_time": "2026-08-12T15:26:11.778643971Z",
            "modified_time": "2026-08-12T15:08:06Z",
            "sha256": "c82adb424b76ab7db887024cb8608a8e7aa3b942797ba38a3eef74fa36c249e5",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

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

Package

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

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": "2d4a88d7ac61db1d7d9afad967897f9a65e2e2556019e3711f7749d0471ba641",
            "tlsh": "174183e33ab89434d5b32090a8a6ee42a627b10b5586fdd8f04dd6b20f6b03827914f4"
        },
        {
            "path": "index.js",
            "sha256": "2d4a88d7ac61db1d7d9afad967897f9a65e2e2556019e3711f7749d0471ba641",
            "tlsh": "174183e33ab89434d5b32090a8a6ee42a627b10b5586fdd8f04dd6b20f6b03827914f4"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-u-1.0.0.tgz",
            "hashes": {
                "sha1": "357636d068cdfeb28911309de68bc4fb9400faee",
                "sha512_sri": "sha512-dmcL6Pn3Q+sH7FhG4gEZuql362QqYaAf78DKT3orGEx4zYEYjYdEl44GP65y1vPYL0XnUCrik59qeZAh7juO0w=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-u/MAL-2026-13904.json"