Incidents like this make me wonder about interesting problems people are currently solving/or will have to address with commercialized space travel. Say if this had happened at a docking port to a space station, regardless of the severity, it would have been fatal for everyone (assuming people in transit wouldn't be in some kind of suit meant to protect them from the vacuum of space/or radiation inside of a ship that…
Ever since Soyuz 11 depressurized after/while detaching from Salyut 1, everyone has used rescue suits during launch/landing. These rescue suits are not good for EVA as they don't provide the same mobility as EVA suits (better mobility while not in a vacuum, little to no mobility while in a vacuum), but they provide life support for limited amounts of time.
Radiation is really something you don't worry about until everybody is safely repressurized.
Edit: Chris Hadfield talks about it: https://www.youtube.com/watch?v=2gaFXZWhp4k