WordPress Plugin Participants Database is prone to multiple vulnerabilities, including arbitrary file upload and cross-site request forgery vulnerabilities. A successful exploit may allow an attacker to upload arbitrary code and run it in the context of the webserver process, which may facilitate unauthorized access or privilege escalation, or to perform certain administrative actions; other attacks are also possible. WordPress Plugin Participants Database version 188.8.131.52 is vulnerable; prior versions may also be affected.
Update to plugin version 184.108.40.206 or latest
WordPress Plugin YITH WooCommerce Compare Security Bypass (2.3.13)
WordPress Plugin ReDi Restaurant Reservation Cross-Site Scripting (21.0307)
WordPress Plugin iThemes Security (formerly Better WP Security) SQL Injection (7.0.2)
WordPress Plugin Simple Events Calendar SQL Injection (1.4.0)