This site has a little more detail about the trail.
Yosemite Hikes: Hite Cove
The writer has a quirky sense of humor…
Hazards: The first mile and a half (2.4 km) of the trail winds along the hillside about a hundred feet above the river. For the most part,
slipping off the trail would lead to some memorable and instructive bruises, but nothing worse. There are spots, however, where the dropoff is sheer enough that a fall could kill you. Be careful when stepping aside to let other hikers pass (it's a single-track trail) and
save the wine until after the hike.
You'll find lots of poison oak here, a few mosquitoes, and the occasional tick.
Later in the year (when you shouldn't be here anyway, due to fire danger) you may encounter rattlesnakes.
BBM
A reviewer said it’s too hot to hike in the summer, so I wonder why they chose to hike now instead of waiting for autumn.