The host is installed with Safari before 13.1.2 on Apple Mac OS X 10.13.6, 10.14.6 or 10.15.x before 10.15.6 and is prone to a cross site scripting vulnerability. A flaw is present in the application, which fails to properly handle a logic issue. Successful exploitation may allow an attacker to lead to universal cross site scripting while processing maliciously crafted web content.