In MODX Revolution before 2.5.7, an attacker might be able to trigger XSS by injecting a payload into the HTTP Host header of a request. This is exploitable only in conjunction with other issues such as Cache Poisoning.Referenceshttps://citadelo.com/en/2017/04/modx-revolution-cms/https://github.com/modxcms/revolution/pull/13426
