WordPress Cross-Domain Flash Injection Vulnerability - CVE-2018-5776
WordPress is prone to a cross-domain Flash injection vulnerability. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site allowing the attacker to steal cookie-based authentication credentials or to fool a user into inserting credentials on a fake Flash form. WordPress versions ranging from 0.70 and up to (and including) 3.6.1 are vulnerable.