Leafs head coach Sheldon Keefe could not provide a very detailed update on Woll's status after the game because the team does not even know all the details yet. However, he could confirm that he will at least miss 'some time' which is a sign that the injury may be serious.
Woll has essentially taken over the starting goaltender duties in Toronto this season and he's been very solid despite lackluster defense in front of him. If he is out for a significant period of time it would be a major blow to the team. Woll proved as recently as today just how good he can be as he was a major part of the reason the team won, as Keefe noted.
The team will now have to rely on Martin Jones to start the majority of games as he is essentially the only healthy goalie the team has. If the team later finds out that Woll will be out for a significant period of time, look for the team to potentially make a move to acquire a new netminder.