Input validation vulnerability in SULly 4.3

The SULly plugin for WordPress has a security flaw that allows hackers to inject malicious code into website pages. This can happen if the plugin’s settings are not properly sanitized and escaped. This vulnerability affects all versions up to and including 4.3, and can only be exploited by users with administrator-level permissions. It primarily affects multi-site installations and those where unfiltered_html has been disabled.