The 'augustdigital-sdk' npm package is an unscoped brand-hijack of the legitimate '@augustdigital/sdk' package. Version 8.20.1 is a byte-for-byte copy of the genuine release but with an added unconditional postinstall hook. This hook executes a Node.js inline script that sends a JSON payload containing the host's OS hostname, user information username, current working directory, package name/version, and a timestamp to a Cloudflare Workers subdomain impersonating build/CDN infrastructure. The data exfiltration is silent and has no opt-out. No further malicious code or credential-stealing functionality was detected in the package contents.

Hosts that install the malicious 'augustdigital-sdk' package version 8.20.1 leak identifying system information—hostname, username, and working directory path—to an attacker-controlled endpoint. This disclosure can aid attackers in reconnaissance and profiling of compromised environments. No direct code execution or credential theft beyond this information leakage is indicated.

Users should avoid installing the unscoped 'augustdigital-sdk' package and instead use the legitimate scoped package '@augustdigital/sdk'. Since this is a malicious package impersonation, remediation involves removing the malicious package from affected systems and verifying no further compromise occurred. There is no official patch because this is a malicious package published by an unauthorized actor. Users should audit their package sources and prefer scoped, verified packages from trusted maintainers.