Paperclip ruby gem suffers from a Server-Side Request Forgery (SSRF) vulnerability in the Paperclip::UriAdapter and Paperclip::HttpUrlProxyAdapter class.

Paperclip gem provides multiple ways a file can be uploaded to a web server. The vulnerability affects two of Paperclip’s IO adapters that accept URLs as attachment data UriAdapter and HttpUrlProxyAdapter. When these adapters are used, Paperclip acts as a proxy and downloads the file from the...