SQL Injection exists in /includes/event-management/index.php in the event-espresso-free (aka Event Espresso Lite) plugin v3.1.37.12.L for WordPress via the recurrence_id parameter to /wp-admin/admin.php.
Add your gear to cvedb and we'll alert you only when eventespresso ships something exploited.
Check my exposure →This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.