Automattic: [sub.wordpress.com] - XSS when adjust block Poll - Confirmation Message - On submission:Redirect to another webpage - Redirect address:[xss_payload]

Summary: Dear Wordpress Team, Today when I tried to create a post with block "Poll" and I have found at Poll Block - Confirmation Message - On submission:Redirect to another webpage and Redirect address:xsspayload At Redirect address line, I can save the javascript:alertdocument.cookie as an URL...