Translate is a package that allows users to convert text to different languages on Node.js and the browser. Prior to version 3.0.0, an attacker controlling the second variable of the "translate" function is able to perform a cache poisoning attack. They can change the outcome of translation requests made by subsequent users. The "opt.id" parameter allows the overwriting of the cache key. If an attacker sets the "id" variable to the cache key that would be generated by another user, they can choose the response that user gets served. Version 3.0.0 fixes this issue.