In a post on the company's Skype support forums, a Microsoft rep stated:
"Our engineering teams worked hard to resolve this issue, and have released updates for all impacted Skype platforms."
The original bug was found on Tuesday by users. Before today's update, sending "http://:" without the quotes caused Skype to crash, and it kept crashing the client every time a user tried to sign in again, due to the message being stored in the chat history.
Only the desktop version of the app has been updated so far, as that was the one crashing for users.