The base58-cli npm package versions 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, and 1.0.5 have been identified as containing malicious code or relying on a dependency with malicious code. This malicious code can fully compromise any computer where the package is installed or running. The compromise includes potential unauthorized access to secrets and keys stored on the system. Due to the severity of the compromise, simply uninstalling the package does not guarantee removal of all malicious artifacts or backdoors.

Systems with any of the affected base58-cli versions installed are considered fully compromised. Attackers may have gained complete control over the system, including access to sensitive information such as secrets and cryptographic keys. This level of compromise can lead to data breaches, unauthorized actions, and persistent malicious presence.

Remove the base58-cli package immediately from affected systems. Rotate all secrets and keys that were stored on the compromised system using a secure, uncompromised device. Because full control of the system may have been given to an attacker, consider rebuilding or thoroughly cleaning the affected system to ensure complete removal of malicious software. No official patch or fixed version is currently indicated; therefore, avoid using this package until a safe version is released.