{"id":"MAL-2026-17552","summary":"Malicious code in css-hgwctv-polyfill (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (ee1103a16c6f933686f07e8ce94068057f49e5cf2f0a6a9ccf01f2baeb7cfe95)\nOn 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.\n","modified":"2026-10-05T04:15:05.065758659Z","published":"2026-10-05T03:36:55Z","database_specific":{"malicious-packages-origins":[{"source":"amazon-inspector","versions":["1.0.0"],"id":"IN-MAL-2026-021022","import_time":"2026-10-05T03:57:39.419282496Z","modified_time":"2026-10-05T03:36:55Z","sha256":"ee1103a16c6f933686f07e8ce94068057f49e5cf2f0a6a9ccf01f2baeb7cfe95"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/css-hgwctv-polyfill/v/1.0.0"}],"affected":[{"package":{"name":"css-hgwctv-polyfill","ecosystem":"npm","purl":"pkg:npm/css-hgwctv-polyfill"},"versions":["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":[{"sha256":"a485cb48081ea590cab385a405886cfe6f30af7d415f30bc8d7937ace461b928","tlsh":"e87154a5b99df02065c33438cb7f4049b4bbc6672d6caee0744899b01f7985c01be6f8","path":"thunderboltRegistry.js"}],"package_integrity":[{"hashes":{"sha512_sri":"sha512-Nn0WqlFZqs+5/snyUmfs7MqP/gLDCuv/sTuoXhq+4CymlRo+ppRZQXGDXMivdpohL1hmALka+INHkX+nAzcc8g==","sha1":"55754fe1d1e6cadd03fe380812dfc6d5f8fc4cd4"},"filename":"css-hgwctv-polyfill-1.0.0.tgz"}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-hgwctv-polyfill/MAL-2026-17552.json"}}],"schema_version":"1.9.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}