Description
WordPress Plugin Widgets for SiteOrigin is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to perform otherwise restricted actions and subsequently perform a variety of the plugin's actions or even take over a website. WordPress Plugin Widgets for SiteOrigin version 1.4.2 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.4.3 or latest
References
https://github.com/Freemius/wordpress-sdk/commit/50a7ca3d921d59e1d2b39bb6ab3c6c7efde494b8
https://plugins.svn.wordpress.org/widgets-for-siteorigin/trunk/readme.txt