MAL-2026-13897

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-n/MAL-2026-13897.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13897
Published
2026-08-12T15:09:05Z
Modified
2026-08-12T15:30:12Z
Summary
Malicious code in @years19/n8n-nodes-utils-helper-n (npm)
Details

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

Source: amazon-inspector (fcd9bc9e9217d04d7194f72655188a2a827bf5cfdb888693d98a15f2434225e4)

Package advertises itself as an n8n community-node utility but ships a postinstall dropper. package.json declares postinstall node callback.js, and main (index.js) is byte-identical to callback.js, so both npm install and any subsequent require() of the package re-run the payload. The payload fetches four tarballs (mhddos, pyroxy-full, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over HTTPS with TLS verification disabled (rejectUnauthorized: false), extracts them into /tmp and the user's site-packages, then launches three background python3 processes running mhddos start.py in UDP/TCP/GET modes against 103.118.252.21, weaponizing the installer host as a DDoS participant. It also collects id and hostname output, base64-encodes the buffer, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017590",
            "import_time": "2026-08-12T15:26:12.428843626Z",
            "modified_time": "2026-08-12T15:09:05Z",
            "sha256": "fcd9bc9e9217d04d7194f72655188a2a827bf5cfdb888693d98a15f2434225e4",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

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

Package

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

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": "47924dadac91aeda94104bb167a64e883a3a149ca2b795eabef9c6caef32bafd",
            "tlsh": "1b51a6f51521913c003311289f17e879e32fa20798a0fdd9fa8e56725f0161cd64fb78"
        },
        {
            "path": "index.js",
            "sha256": "47924dadac91aeda94104bb167a64e883a3a149ca2b795eabef9c6caef32bafd",
            "tlsh": "1b51a6f51521913c003311289f17e879e32fa20798a0fdd9fa8e56725f0161cd64fb78"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-n-1.0.0.tgz",
            "hashes": {
                "sha1": "62350bf51f0bd2e6ff1927fdfc352bca80c9c71d",
                "sha512_sri": "sha512-M2iWNmR4QoSnIlMQp1vlwsB2jgRaBn/eyRKAe1ez4LnhMrbYbNNnTzCA9NfsKV+fxXeE0b/kePp9EBpopYXCKQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years19/n8n-nodes-utils-helper-n/MAL-2026-13897.json"