Open-Xchange: SSRF - RSS feed, blacklist bypass (IP Formatting)

FYI - Tested on local installation of App Suite 7.8.4 REV 17 Hello, There appears to be a SSRF vulnerability in the below endpoint. This is due to a failure in the App Suite code when evaluating an IP address against a blacklist. The SSRF is limited to scanning hosts on port 80/443 but accuracy i...