I have a 21' EX-L with 17+k. I was trying to chase down a rattle/vibration when going over rough roads. It was coming from the drivers door where it meets the dash area. It drove me crazy for a good month. I was cleaning the drivers floor one day and accidentally bumped the E-brake pedal, it made that rattle. The Ah-Ha moment! So I looked on what I could tighten up, nothing on the pedal bracket. However if you adjust the E-brake, it makes the rattle stop.
Full disclosure, I knew I needed to tighten the E-brake anyway, I was just being lazy. I found that the adjustment point is under the drivers seat. When you slide the seat all the way back, there is a plastic cover. Lift said cover and you'll find the adjustment point.