Malicious code in css-hgwctv-polyfill (npm)
--- _-= 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.
MAL-2026-17552
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:MAL-2026-17552
css-hgwctv-polyfill
Source reference: /affected/0/package/name
- Affected versions
- 1.0.0
Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"package": {
"name": "css-hgwctv-polyfill",
"purl": "pkg:npm/css-hgwctv-polyfill",
"ecosystem": "npm"
},
"versions": [
"1.0.0"
],
"database_specific": {
"cwes": [
{
"name": "Embedded Malicious Code",
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature."
}
],
"source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-hgwctv-polyfill/MAL-2026-17552.json",
"indicators": {
"evidence_files": [
{
"path": "thunderboltRegistry.js",
"tlsh": "e87154a5b99df02065c33438cb7f4049b4bbc6672d6caee0744899b01f7985c01be6f8",
"sha256": "a485cb48081ea590cab385a405886cfe6f30af7d415f30bc8d7937ace461b928"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "55754fe1d1e6cadd03fe380812dfc6d5f8fc4cd4",
"sha512_sri": "sha512-Nn0WqlFZqs+5/snyUmfs7MqP/gLDCuv/sTuoXhq+4CymlRo+ppRZQXGDXMivdpohL1hmALka+INHkX+nAzcc8g=="
},
"filename": "css-hgwctv-polyfill-1.0.0.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #83607 · Revision 1
- Added to Heist Feed
- Publisher date