MAL-2026-17552

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-hgwctv-polyfill/MAL-2026-17552.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17552
Published
2026-10-05T03:36:55Z
Modified
2026-10-05T04:15:05Z
Summary
Malicious code in css-hgwctv-polyfill (npm)
Details

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

Source: amazon-inspector (ee1103a16c6f933686f07e8ce94068057f49e5cf2f0a6a9ccf01f2baeb7cfe95)

On require, thunderboltRegistry.js runs an immediately-invoked function that uses child_process.execSync to collect host identity and network reconnaissance from the installer's machine (id, whoami, uname -a, ifconfig/ip addr, and /etc/hosts), plus hostname, Node.js version, platform and pid, and transmits each result via fetch to the hardcoded plain-HTTP endpoint http://dxpoc.gt.tc/callback.php/bb8968d0f67000433bf7005dd5ad2d1f. The package also exports Proxy stubs named thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry and ships a registry-manifest.min.json referencing parastorage.com, mimicking internal Wix thunderbolt build modules so the module auto-loads inside a Wix build and executes the reconnaissance payload. A CSS polyfill has no functional reason to execute shell commands, read /etc/hosts, or contact an external host.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-021022",
            "import_time":  "2026-10-05T03:57:39.419282496Z",
            "modified_time":  "2026-10-05T03:36:55Z",
            "sha256":  "ee1103a16c6f933686f07e8ce94068057f49e5cf2f0a6a9ccf01f2baeb7cfe95",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / css-hgwctv-polyfill

Package

Name
css-hgwctv-polyfill
View open source insights on deps.dev
Purl
pkg:npm/css-hgwctv-polyfill

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":  "thunderboltRegistry.js",
            "sha256":  "a485cb48081ea590cab385a405886cfe6f30af7d415f30bc8d7937ace461b928",
            "tlsh":  "e87154a5b99df02065c33438cb7f4049b4bbc6672d6caee0744899b01f7985c01be6f8"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "css-hgwctv-polyfill-1.0.0.tgz",
            "hashes":  {
                "sha1":  "55754fe1d1e6cadd03fe380812dfc6d5f8fc4cd4",
                "sha512_sri":  "sha512-Nn0WqlFZqs+5/snyUmfs7MqP/gLDCuv/sTuoXhq+4CymlRo+ppRZQXGDXMivdpohL1hmALka+INHkX+nAzcc8g=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-hgwctv-polyfill/MAL-2026-17552.json"