imgproxy is server for resizing, processing, and converting images. Imgproxy does not block the 0.0.0.0 address, even with IMGPROXY_ALLOW_LOOPBACK_SOURCE_ADDRESSES set to false. This can expose services on the local host. This vulnerability is fixed in 3.27.2.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.