I recently learned that Nextcloud 23's new profile feature — basically a
way for users to share personal contact details — has a problematic
default setting, profile data is shared with **everyone** by default.
This means that an unauthenticated user can access personal information
by accessing `nextcloud.tld/u/user.name`.
The announcement of v23 states[1]:
> We go a step further and introduce a profile page. Here you can put a
> description of yourself, show links to, for example, social media, what
> department you are in and information on how to contact you. All these
> are of course entirely optional and you can choose what is visible to who!
> The profile and user status are accessible also from our mobile and desktop clients.
It's not mentioned that by default you share personal information[3] with
everyone and personally I think that's somewhat problematic.
To work around that, I decided to add an option for the recently added[2]
and even set it to `false` by default to make an explicit opt-in for
that feature.
[1] https://nextcloud.com/blog/nextcloud-hub-2-brings-major-overhaul-introducing-nextcloud-office-p2p-backup-and-more/
[2] https://github.com/nextcloud/server/pull/31624/files
[3] By default, this affects the following properties:
* About
* Full name
* Headline
* Organisation
* Profile picture
* Role
* Twitter
* Website
Phone, Address and Email are not affected and only shown to
authenticated users by default.