Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin <= 2.11.0 - Unauthenticated Sensitive Information Exposure

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.0 via the ajax_get_members function. This is due to the use of a predictable low-entropy token (5 hex characters derived from md5 of post ID) to identify member directories and insufficient authorization checks on the unauthenticated AJAX endpoint. This makes it possible for unauthenticated attackers to extract sensitive data including usernames, display names, user roles (including administrator accounts), profile URLs, and user IDs by enumerating predictable directory_id values or brute-forcing the small 16^5 token space.

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to SQL Injection via the 'sorting' parameter in versions 2.1.3 to 2.8.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Authenticated Cross site Scripting exists in the User Profile & Membership plugin before 2.0.11 for WordPress via the "Account Deletion Custom Text" input field on the wp-admin/admin.php?page=um_options&section=account page.

The User Profile & Membership plugin before 2.0.7 for WordPress has no mitigations implemented against cross site request forgery attacks. This is a structural finding throughout the entire plugin.

Ultimate Member plugin prior to version 2.0.4 for WordPress allows remote authenticated attackers to bypass access restriction to modify the other users profiles via unspecified vectors.

Ultimate Member plugin prior to version 2.0.4 for WordPress allows remote authenticated attackers to bypass access restriction to add a new form in the 'Forms' page via unspecified vectors.

Directory traversal vulnerability in the AJAX function of Ultimate Member plugin prior to version 2.0.4 for WordPress allows remote attackers to read arbitrary files via unspecified vectors.

Unrestricted file upload vulnerability in Ultimate Member plugin prior to version 2.0.4 for WordPress allows remote authenticated users to upload arbitrary image files via unspecified vectors.

Directory traversal vulnerability in the shortcodes function of Ultimate Member plugin prior to version 2.0.4 for WordPress allows remote authenticated attackers to read arbitrary files via unspecified vectors.