GHSA-X756-G4X3-C64M Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses

Summary Cloudreve's remote download workflow accepts user-supplied URLs and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets. When the remote download permission is granted to a non-admin user group, a normal...