MAL-2026-17766

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@s4yhiitestpoc/scan-https-d/MAL-2026-17766.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17766
Published
2026-10-11T13:58:59Z
Modified
2026-10-11T14:30:09Z
Summary
Malicious code in @s4yhiitestpoc/scan-https-d (npm)
Details

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

Source: amazon-inspector (1a1dd63de3f5e380c573cd6bcf885c9d0c7a5c503959dfde1a6c8b963a6ddaea)

On npm install, postinstall.js collects installer host identity — os.hostname(), os.userInfo().username, home directory, cwd, non-internal network interface addresses, DNS servers, and platform/arch/release — and POSTs it as JSON over HTTPS to the hardcoded endpoint https://collector.oob.s4yhii.com/_npm-poc/beacon, with a secondary DNS lookup against *.oob.s4yhii.com as an out-of-band execution signal. The package's scope (@s4yhiitestpoc/*) and metadata self-describe this as a dependency-confusion proof-of-concept targeting internal namespaces that resolve to the public registry; the self-labeling does not change the fact that installer host identifiers leave the installer's machine on install to a hardcoded third-party domain the installer did not opt into.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-021434",
            "import_time": "2026-10-11T14:18:05.348764552Z",
            "modified_time": "2026-10-11T13:58:59Z",
            "sha256": "1a1dd63de3f5e380c573cd6bcf885c9d0c7a5c503959dfde1a6c8b963a6ddaea",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @s4yhiitestpoc/scan-https-d

Package

Name
@s4yhiitestpoc/scan-https-d
View open source insights on deps.dev
Purl
pkg:npm/%40s4yhiitestpoc/scan-https-d

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": "postinstall.js",
            "sha256": "f23aca67400de96abcfaa7a7c0ef987ebe14cef43467110595c8abc4a51f532d",
            "tlsh": "fa51a75512b0237137f12ad0a84e54f5d322c3a6795979e4b18d02846bcb4fa42b62fb"
        }
    ],
    "package_integrity": [
        {
            "filename": "scan-https-d-1.0.0.tgz",
            "hashes": {
                "sha1": "f50c0ae29c524e0f135059f4c3779ed2906c2dd1",
                "sha512_sri": "sha512-1xxUqIEv1UbxyZhi/GGYOFDfw1ezF4Ny8LGm/Vas2bWUU97X+dl/PrgOkV7zsbSazyk69DzGPuDw6lhN10jzbw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@s4yhiitestpoc/scan-https-d/MAL-2026-17766.json"