The starlette-healthcheck package on PyPI versions 1.2.0, 1.3.0, and 1.3.1 contains malicious code that covertly collects environment variable names, the machine hostname, and the public IP address, then sends this telemetry to an author-controlled Azure Container Apps endpoint. This behavior is undocumented and unrelated to the package's advertised functionality as an ASGI healthcheck and request-logging utility. The package includes a hardcoded API key and an undocumented override for the logging endpoint, increasing the risk of incidental adoption due to its plausible utility name and generic author metadata.