The Download Manager WordPress plugin before 3.2.71 does not adequately validate passwords for password-protected files. Upon validation, a master key is generated and exposed to the user, which may be used to download any password-protected file on the server, allowing a user to download any file with the knowledge of any one file's password.
The Download Manager WordPress plugin before 3.2.62 does not validate and escapes some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as a contributor to perform Stored Cross-Site Scripting attacks against logged-in admins.