The issue allows a remote unauthenticated attacker to send legitimate looking links, appearing to be any website URL, by abusing the non-http/non-https automatic rendering of URLs. This is achieved through RTLO injection, where an attacker can spoof, for example, example.com, and masquerade any URL with a malicious destination. An attacker requires a subdomain such as gepj, txt, fdp, or xcod, which would appear backwards as jpeg, txt, pdf, and docx respectively. The technique involves incorrectly rendering RTLO encoded URLs beginning with a non-breaking space, when there is a hash character in the URL.