The download-manager plugin before 2.9.94 for WordPress has XSS via the category shortcode feature, as demonstrated by the orderby or search[publish_date] parameter.
Cross-site scripting vulnerability in WordPress Download Manager prior to version 2.9.50 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
Open redirect vulnerability in WordPress Download Manager prior to version 2.9.51 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.