The 'tokenization-util' npm package (versions 0.2.0 and 1.1.0) includes a heavily obfuscated malicious payload concealed inside the calculateTokenPrice function. The payload uses approximately 1500 leading tab characters for visual concealment, then employs two seeded Fisher-Yates string-shuffler decoders and String.fromCharCode splicing to reconstruct critical identifiers such as 'constructor', 'require', and 'module' at runtime. It dynamically creates a Function constructor to decode and execute a second scrambled JavaScript blob. The code assigns CommonJS require and module bindings to the global object, granting the decoded payload unrestricted access to Node.js built-in modules including network, filesystem, and child process capabilities. This backdoor executes whenever calculateTokenPrice is invoked, providing a remote code execution vector hidden behind obfuscation and undocumented in the package's API or README.

Any system with the affected versions of the 'tokenization-util' package installed or running is considered fully compromised. The malicious payload grants attackers full control over the host environment by exposing Node.js built-in modules globally and executing arbitrary code. This can lead to theft of secrets, keys, and other sensitive data. Removal of the package alone does not guarantee eradication of the compromise, as the attacker may have established persistent backdoors or additional malware.

No official patch or fix is currently available. Immediate removal of the 'tokenization-util' package versions 0.2.0 and 1.1.0 is strongly recommended. All secrets, keys, and credentials stored on affected systems should be rotated from a trusted, uncompromised environment. Due to the high likelihood of full system compromise, a thorough incident response and forensic analysis should be conducted to identify and remediate any persistent threats beyond the malicious package itself.