Description
One or more documentation files (e.g. readme.txt, changelog.txt, ...) were found. The information contained in these files could help an attacker identify the web application you are using and sometimes the version of the application. It's recommended to remove these files from production systems.
Remediation
Remove or restrict access to all documentation file acessible from internet.
References
Related Vulnerabilities
WordPress Plugin MAC PHOTO GALLERY 'albid' Parameter Arbitrary File Disclosure (2.8)
PHP-CS-Fixer cache file publicly accessible (.php_cs.cache)
Joomla! Core 2.5.x Information Disclosure (2.5.0 - 2.5.8)
WordPress Plugin Zip Attachments Arbitrary File Download (1.4)
WordPress Plugin Health Check & Troubleshooting Arbitrary File Disclosure (1.2.3)