Belgium has changed the travel advisory for Paris and area, which includes
Disneyland Paris. Brussels is about 3-4 hours away from Disneyland Paris.
It changed to 'orange' which means that yes, you can still travel, but they do advice a quarantine and a test when you return. It's the first of the EU countries to do so, to my knowledge.
Could be that Belgium is extra cautious as they are not doing too well, especially Antwerp is in trouble. I was in Brussels two days ago and saw them setting up the big summer fair in the city. That has been cancelled now as well.
The Netherlands has put Antwerp and area on the list of negative travel advisory, but nothing yet for Paris.