PCV valve oil leak

While I was checking my fluids this past weekend, I noticed that my PCV valve was leaking oil. Thing is, I just changed it the beginning of the summer and don't know why it's leaking. My oil cap is too and I haven't changed that yet so I'm assuming I just need to change the oil cap for that one. But does anyone have any idea on why my PCV valve would be leaking so soon already? Not a whole bunch but noticeable since I just cleaned my engine bay about a week ago. :screwy:

try to tighten it.