MAL-2026-16344

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sorrawit-dev-helper/MAL-2026-16344.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16344
Published
2026-09-21T03:30:28Z
Modified
2026-09-21T04:00:07Z
Summary
Malicious code in sorrawit-dev-helper (npm)
Details

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

Source: amazon-inspector (c64040dcfbbdb6ce434caf3cd5bd2baa518cc00970281a69f5309d57a4621233)

package.json declares a postinstall lifecycle script that runs automatically on npm install. The script reads /tmp/flag.txt from the installer's machine and sends its URL-encoded contents as a query parameter to a hardcoded ngrok tunnel at https://ca37-49-237-83-218.ngrok-free.app/. The destination is an ephemeral tunnel host unrelated to any legitimate publisher, and the read+exfil fires without user interaction. The behavior matches install-time credential/file exfiltration with a concrete installer-side data source and a concrete attacker-controlled destination.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-020228",
            "import_time": "2026-09-21T03:46:37.843397503Z",
            "modified_time": "2026-09-21T03:30:28Z",
            "sha256": "c64040dcfbbdb6ce434caf3cd5bd2baa518cc00970281a69f5309d57a4621233",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / sorrawit-dev-helper

Package

Name
sorrawit-dev-helper
View open source insights on deps.dev
Purl
pkg:npm/sorrawit-dev-helper

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": "package.json",
            "sha256": "7db39816bad2f28d1cfee5ab8a7722d83e66c2dd78a98278127ea874fd843c72",
            "tlsh": "b3f05ce01911453359c041161ae99056b3719a1f0a947924f78b582d43df6b38df5359"
        }
    ],
    "package_integrity": [
        {
            "filename": "sorrawit-dev-helper-1.0.0.tgz",
            "hashes": {
                "sha1": "20630c2667e0fef169f10b1b3aa5fdc3b91ae1bf",
                "sha512_sri": "sha512-LxiqGmIWY5Py5rRHMsoOJ5oovRfGL0L7McqY1/Mg0Cj8ilSCjZBB3wO7yUpwGEyu8yWPAuKWPc9vW4cZvJ5TNQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sorrawit-dev-helper/MAL-2026-16344.json"