Description
WordPress Plugin Front-End Only Users is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Front-End Only Users version 3.1.10 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 3.1.12 or latest
References
https://wordpress.org/support/topic/xss-on-user-listing/
https://plugins.svn.wordpress.org/front-end-only-users/trunk/readme.txt
Related Vulnerabilities
WordPress Plugin Database Backup for WordPress Cross-Site Scripting (2.3.3)
Drupal Data Processing Errors Vulnerability (CVE-2017-6920)
MySQL CVE-2016-5635 Vulnerability (CVE-2016-5635)
Oracle Database Server CVE-2011-0832 Vulnerability (CVE-2011-0832)
Oracle Application Server Other Vulnerability (CVE-2007-0283)