Description
Virtual hosting is a method for hosting multiple domain names (with separate handling of each name) on a single server (or pool of servers). This allows one server to share its resources, such as memory and processor cycles, without requiring all services provided to use the same host name.
This web server is responding differently when the Host header is manipulated and various common virtual hosts are tested. This could indicate there is a Virtual Host present.
Remediation
Consult the virtual host configuration and check if this virtual host should be publicly accessible.
References
Related Vulnerabilities
phpMyAdmin Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-5739)
Jira QueryComponent Information Disclosure (CVE-2020-14179)
Unrestricted access to Odoo DB manager
Tiki Wiki CMS: Remote Code Execution via Calendar Module
WordPress Plugin Advanced Contact form 7 DB Information Disclosure (1.6.2)