MAL-2026-10739

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mw-server-util/MAL-2026-10739.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10739
Published
2026-07-16T18:37:57Z
Modified
2026-07-16T19:19:49.058547661Z
Summary
Malicious code in mw-server-util (npm)
Details

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

Source: amazon-inspector (1401412848e55e1515db44b1f513ad6e39628f06c24c3b057a08448c9e8ee44c)

mw-server-util 2.0.1 ships a postinstall hook that runs mw.js, which reads os.hostname() and os.userInfo() and issues an HTTPS GET to a hardcoded Burp Collaborator subdomain gdx35zc4m7hymba6asotmwhd349vxlla.oastify.com, transmitting the installer's hostname, username, package name, and a timestamp on npm install. The destination is an attacker-controlled OAST callback typical of dependency-confusion beacons; the fetch fires automatically as a lifecycle side effect with no relation to any documented package purpose.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "1401412848e55e1515db44b1f513ad6e39628f06c24c3b057a08448c9e8ee44c",
            "modified_time": "2026-07-16T18:38:05Z",
            "versions": [
                "2.0.1"
            ],
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-010724",
            "import_time": "2026-07-16T18:54:01.342376763Z"
        },
        {
            "sha256": "9827776af0bcdd4df831ab5e5d567d67f18436f256a21b3d528dac3506685261",
            "modified_time": "2026-07-16T18:37:57Z",
            "versions": [
                "2.0.0"
            ],
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-010723",
            "import_time": "2026-07-16T18:54:01.269721295Z"
        }
    ]
}
References
Credits

Affected packages

npm / mw-server-util

Package

Name
mw-server-util
View open source insights on deps.dev
Purl
pkg:npm/mw-server-util

Affected ranges

Affected versions

2.*
2.0.0
2.0.1

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-8n/p/DpIEcHMuKqwuH0bkeAA5YmBE1vre5hbpSKHvJ7W2nHSyKqobWqMcnPiJsmy1fqqEaB+tZ2f3+LR1PI7Pw==",
                "sha1": "a5b50b7deb027cc0e26822bd6f8818cc952c495d"
            },
            "filename": "mw-server-util-2.0.1.tgz"
        }
    ],
    "evidence_files": [
        {
            "sha256": "2a5c4745085cfadf4fc58cf8d3cd04420447009715c9683f77467c09a38df4e8",
            "tlsh": "19e0abec02e0e2752de171d0e8209c88a2bbe5823d13b0e7cb8c30b5d241ce14db3790",
            "path": "mw.js"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mw-server-util/MAL-2026-10739.json"