CVE-2021-36841: WordPress YITH Maintenance Mode plugin <= 1.3.7 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability - Patchstack

Authenticated Stored Cross-Site Scripting (XSS) vulnerability in YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7, vulnerable parameter &yith_maintenance_newsletter_submit_label. Possible even when unfiltered HTML is disallowed by WordPress configuration.