Description
WordPress Plugin Events Search For The Events Calendar is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to perform otherwise restricted actions and subsequently download and extract a remote ZIP file on the blog, which can lead to remote code execution. WordPress Plugin Events Search For The Events Calendar version 1.1.3 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.2 or latest
References
https://blog.nintechnet.com/8-wordpress-plugins-fixed-high-severity-vulnerability/
https://plugins.svn.wordpress.org/events-search-addon-for-the-events-calendar/trunk/readme.txt