indeed-membership-pro (Ultimate Membership Pro) 7.4.2<=7.5 arbitrary media include

In addition to cropping/rotating/resizing an image of your choosing, you can abuse the imgUrl feature on versions that it's available on (7.4.2+ at least) to make an HTTP request to any site you want. For example, by having it connect to a site you control, you can determine the IP address of the origin even when the site is behind a third party WAF such as Fastly, Cloudflare, Sucuri, etc: