Yes, a standard issue stove (or an oven or a range depending on what you want to call it) can fit in a 2nd Generation 2003 Honda CRV if you put the seats down and finagle it a bit.
If your car is somehow magically clean too you could probably put the seats all the way up and not have to finagle as much. You might even be able to keep the left passenger seat up, although I wouldn’t count on it.
I do not have a 2002, 2004, 2005, or 2006 CRV to test this on, but I’m pretty sure it’ll fit in those too.