Kirki < 6.0.12 - Unauthenticated HTML Injection in Password Reset Email via kirki-forgot-password

The Kirki WordPress plugin before 6.0.12 does not sanitise or escape the email subject and body values supplied in a request before including them in the password-reset email it sends as HTML, allowing unauthenticated users to inject arbitrary HTML into the message delivered to a registered user, which can be used for phishing.