The Advanced Access Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Read in versions up to, and including, 5.9.8.1 due to insufficient validation on the aam-media parameter. This allows unauthenticated attackers to read any file on the server, including sensitive files such as wp-config.php
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.