Description
webadmin.php is a simple Web-based file manager. This file manager should not be installed on production systems because it doesn't employ any user authentication in the default configuration. Therefore an attacker can read and create random files in your system.
Remediation
Restrict access to this file or remove it from the system.
References
Related Vulnerabilities
WordPress Plugin Slideshow Information Disclosure (2.2.21)
WordPress Plugin Simple File Downloader Cross-Site Scripting (1.0.4)
WordPress Plugin Product Input Fields for WooCommerce Arbitrary File Download (1.2.6)
WordPress Plugin Caldera Forms-More Than Contact Forms Information Disclosure (1.3.5.2)