Ruby on Rails 5.2.6 (2021-05-05)
There are changes in www/ruby-actionpack52 only, including security fix.
Action Pack
* Accept base64_urlsafe CSRF tokens to make forward compatible.
Base64 strict-encoded CSRF tokens are not inherently websafe, which
makes them difficult to deal with. For example, the common practice
of sending the CSRF token to a browser in a client-readable cookie
does not work properly out of the box: the value has to be
url-encoded and decoded to survive transport.
In this version, we generate Base64 urlsafe-encoded CSRF tokens,
which are inherently safe to transport. Validation accepts both
urlsafe tokens, and strict-encoded tokens for backwards
compatibility.
How the tokes are encoded is controllr by the
action_controller.urlsafe_csrf_tokens config.
In Rails 5.2.5, the CSRF token format was accidentally changed to
urlsafe-encoded.
Atention: If you already upgraded your application to 5.2.5, set the
config urlsafe_csrf_tokens to true, otherwise your form submission
will start to fail during the deploy of this new version.
Rails.application.config.action_controller.urlsafe_csrf_tokens = true
If you are upgrading from 5.2.4.x, you don't need to change this
configuration.
Scott Blum, Étienne Barrié
7150d31f24