GMS-2023-1872: @keystone-6/core's bundled cuid package known to be insecure

Summary

The cuid package used by @keystone-6/* and upstream dependencies is deprecated and marked as insecure by the author.

As reported by the author

Cuid and other k-sortable and non-cryptographic ids (Ulid, ObjectId, KSUID, all UUIDs) are all insecure. Use @paralleldrive/cuid2 instead.

What are doing about this?

• We are waiting on Prisma to add support for cuid2
• Alternatively, we might default to a random string ourselves

What can I do about this?

We have added a work-around for users who want to provide custom identifiers in https://github.com/keystonejs/keystone/pull/8645

What if I need a cuid?

The features marked as a security vulnerability by @paralleldrive are sometimes actually needed (as written in the README of cuid) - the problem is the inherent risks that features like this can have.

You might actually want the features of a monotonically increasing (auto-increment, k-sortable), and timestamp-based id as part of your application, and keystone should support that - but you might not want them by default. This is why this security advisory has been accepted by me (@dcousens), we currently use cuid identifiers by default, and that should change.

Impact

I have accepted this security advisory on the basis that we don’t need this kind of identifier typically, and the need for them should be driven by an application’s requirements, not a convenient default.