Researchers say they have uncovered another way hackers could send malicious code to users via browsers. Researchers: “These URI payloads can be passed by the mailto, nntp, news, and snews URIs, allowing us to pass the payload without any user interaction” The bugs were a hot topic throughout July, when Norwegian researcher Thor Larholm showed how a browser could be tricked into sending malformed data from other applications. Microsoft has repeatedly said that protocol handling problems are up to individual applications, not Windows itself.”]
Source: https://www.csoonline.com/article/2121946/firefox-vulnerable-to-protocol-handling-bug-attacks.html