The 'webrix-docs' npm package version 20.2.11 declares a preinstall script that executes 'node index.js' on installation. This script gathers reconnaissance data from the host environment, including os.hostname(), os.userInfo(), process.platform, current working directory, and outputs of 'whoami' and 'id' commands. It then exfiltrates this data as JSON via an HTTP POST request to a hardcoded URL associated with an out-of-band interaction service (oastify.com). The package lacks legitimate library code and is likely a typosquatting or dependency confusion attack designed solely to collect system information during installation.

The malicious package can leak sensitive host information such as system hostname, user identity, platform details, and directory context to an attacker-controlled server during installation. This reconnaissance data could be used to further target or profile affected systems. There is no indication of code execution beyond data exfiltration or persistence mechanisms described in the provided information.

No official patch or fix is indicated for this package. The best mitigation is to avoid installing the 'webrix-docs' package version 20.2.11 and verify package authenticity before installation. Use trusted sources and verify package names carefully to avoid typosquatting attacks. Monitor dependency manifests for suspicious packages and remove any instances of this malicious package.