MAL-2026-13850

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-d/MAL-2026-13850.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13850
Published
2026-08-12T12:17:35Z
Modified
2026-08-12T12:30:16.242068755Z
Summary
Malicious code in @years18/n8n-nodes-utils-helper-d (npm)
Details

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

Source: amazon-inspector (0940a90826ae5cd1b3d36dbbebd7813996ccbcf80e8c24759829dad3c17ed66e)

Package is presented as an n8n community node but the only node file (nodes/PwnNode.node.js) is a 213-byte stub; the real behavior is in callback.js, which is invoked by the postinstall lifecycle hook ("postinstall": "node callback.js"). On install, callback.js performs three attacker-benefit actions against the installer's host: (1) it fetches https://jasabersama.id/assets/cache/.theme-backup/dl/mhddos.tgz over TLS with certificate validation disabled (rejectUnauthorized: false), writes it to /tmp/mhddos.tgz, extracts it, pip-installs its declared requirements, and runs python3 start.py — unattended remote code execution of a mutable third-party archive labelled after the mhddos DDoS tool family; (2) it runs id and hostname and probes an internal TCP endpoint, base64-encodes the combined output, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php, leaking installer identity and network state to the same author-controlled host; (3) it executes bash -c 'echo > /dev/tcp/10.131.106.93/8888' against a hardcoded RFC1918 address (with a source comment referring to Sliver, an offensive C2 framework) and reports reachability back — internal-network reconnaissance consistent with lateral-movement staging. index.js contains the same payload as callback.js, ensuring the code also runs on require of the module.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-12T12:24:10.853798127Z",
            "sha256": "0940a90826ae5cd1b3d36dbbebd7813996ccbcf80e8c24759829dad3c17ed66e",
            "modified_time": "2026-08-12T12:17:35Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017409",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

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

Package

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

Affected ranges

Affected versions

1.*
1.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@years18/n8n-nodes-utils-helper-d/MAL-2026-13850.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "ec95ab71a5b43888d96ada87905d1fb6551d899210181e33fdb78d9110359ff9",
            "path": "callback.js",
            "tlsh": "094151f9126351388563729c6b2bdd1bf46bf00b5081bec8fa8f43b38f125189d566a8"
        },
        {
            "sha256": "9833640ac272d8c24149b9be031b3a3f5cc06ba7852a2eda829150edeaeaffe5",
            "path": "package.json",
            "tlsh": "22f055028cb20f3321cd6b66189a8101aa246e8b949c7c2873cf010c87986b52abe689"
        }
    ],
    "package_integrity": [
        {
            "filename": "n8n-nodes-utils-helper-d-1.0.0.tgz",
            "hashes": {
                "sha1": "c6b7f98646ca95011163c7ba2a5b1f4b5f09e4a7",
                "sha512_sri": "sha512-tHsRFqN4INkO9hAp5eartyxNCp2ZTqaknz3PF5IqCVF/sMzD7Z8YL7rW4tiJ6qe8d1LX5PX8XlxO78hv1LgI9A=="
            }
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]