CVE-2021-36841: Yithemes Yith Maintenance Mode

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Yithemes Yith Maintenance Mode: up to and including 1.3.7

Published 2021-09-27. Last modified 2026-06-17.