After upgrading and writing a new blog post, I uploaded some images with the upload feature in wordpress. After publishing the post, i noticed on my website (which parsed the latest 5 blog posts), that the latest 5 posts were the names of the images i had uploaded.
So i check the database and with wp_posts, all the image names and locations were stored in this table.
Now i'm not sure if this has always been the case, or if this is even a bug. But it doesn't seem to be very convenient.
Update: I removed the rows from the database, and the post was not affected in any way.