Best I could find is the crv can tow 1500lbs, which probably doesn't account for much inside the vehicle. So I'd be concerned about putting 4 adults and a trailer on it. If looking at this size, give the Mazda cx5 a look as it drives better and can tow up to 2k.
However, why not step up to a pilot? More appropriate size for that many and it can easily tow double (and more) what a crv could. The new model pilot would be preferable if could swing that.
This is what seems to escape most who ask about towing.
For almost all vehicles, tow capacities are set using a driver (typically 150# is used as the driver's weight) and an otherwise empty vehicle with no optional equipment, although some vehicles do set the tow capacity with a driver and a passenger. Anything else carried in the vehicle reduces the tow capacity. So, every child, adult, every bit of detritus you carry in the vehicle reduces the towing capacity. If the vehicle doesn't come with A/C as standard, if it's there, its weight negatively impacts tow capacity. And on and on.
There is an option you can get on some vehicles, like the Toyota Highlander, that increases tow capacity...a tow package. The Highlander's includes a higher capacity radiator and alternator, and increases the base tow capacity from 2000# to 3500#.
Or like the Honda Pilot. Two tow capacity ratings, 3500# and 5000#. The higher rating is on AWD models with an accessory ATF cooler. 2WD and AWD without the accessory ATF cooler get the lower rating.
Gotta do your research, and on many models, it's info that's very hard to find.