{"id":"MAL-2026-17487","summary":"Malicious code in css-snap-target-polyfill (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (00c104d427125b4acf88ecb83a58d563507b23bcb716cb87fbf7fc953d816d42)\nThe package ships thunderboltRegistry.js, which uses child_process and process.platform to collect host information and POSTs it via fetch() to the hardcoded external endpoint http://dxpoc.gt.tc. The destination is unrelated to any CSS polyfill functionality the package name advertises, is served over cleartext HTTP, and is not caller-configurable. This behavior does not correspond to the declared purpose of a CSS snap-target polyfill, which has no legitimate need to execute shell commands or beacon host details to a third-party domain.\n","modified":"2026-10-04T23:30:04.793158566Z","published":"2026-10-04T23:15:33Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-10-04T23:15:33Z","sha256":"00c104d427125b4acf88ecb83a58d563507b23bcb716cb87fbf7fc953d816d42","source":"amazon-inspector","versions":["1.0.0"],"id":"IN-MAL-2026-020894","import_time":"2026-10-04T23:16:30.907131478Z"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/css-snap-target-polyfill/v/1.0.0"}],"affected":[{"package":{"name":"css-snap-target-polyfill","ecosystem":"npm","purl":"pkg:npm/css-snap-target-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":{"package_integrity":[{"hashes":{"sha1":"720073d7726d9d8f5a3ed04a2ac288edd0d0b560","sha512_sri":"sha512-/XPntM9AYq8PMebtgxW19QPWjcMwRiwYrNW4U4CeScbV8vzCc46oFedyzM+t5Y4KnCCG86InDZzqKrhwsQl5GA=="},"filename":"css-snap-target-polyfill-1.0.0.tgz"}],"evidence_files":[{"tlsh":"e87154a5b99df02065c33438cb7f4049b4bbc6672d6caee0744899b01f7985c01be6f8","path":"thunderboltRegistry.js","sha256":"a485cb48081ea590cab385a405886cfe6f30af7d415f30bc8d7937ace461b928"}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-snap-target-polyfill/MAL-2026-17487.json"}}],"schema_version":"1.9.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}