VYPR

npm · Malicious package advisory

Malware

css-snap-target-polyfill

MAL-2026-17487

Malicious code in css-snap-target-polyfill (npm)

Details


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## Source: amazon-inspector (00c104d427125b4acf88ecb83a58d563507b23bcb716cb87fbf7fc953d816d42)
The 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.

Compromised versions (1)

  • 1.0.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.