Not really. But the more fundamental question is: Is the license really royalty free and did you get it from the rightfull owner.
Thats the danger. If I upload a picture from Getty Images toa website for “free textures” with a comment “Its free. Have fun”.
When you use the image, Getty will sue you. They dont care that I claimed to have the rights. In this case you just belived a liar. Lough luck.
So how would you check if “UserLittleTimmy98” really has therights to that cool brick texture he uploaded?