Description
WordPress Plugin File Manager 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 File Manager version 2.9 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 3.0 or latest
References
http://blog.51cto.com/010bjsoft/2171087
https://plugins.svn.wordpress.org/wp-file-manager/trunk/readme.txt
Related Vulnerabilities
Django Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-2513)
WordPress Improper Input Validation Vulnerability (CVE-2017-9065)
WordPress 4.6.x Multiple Vulnerabilities (4.6 - 4.6.12)
WordPress Plugin Relevanssi-A Better Search 'Seach Query' Field HTML Injection (2.7.2)