Bulk inserting users with preset passwords to Overleaf CE

We were recently asked to inboard a large amount of users with pre-selected passwords to one of our Overleaf Community Edition instance. The web UI of Overleaf CE only allows adding users one by one (with their email address), and the included NodeJS scripts (accessible from inside the sharelatex container) do not allow admins to specify a given password for a fresh user. We ended up adding users to the MongoDB instance backing up Overleaf CE dir...