User Access Manager vulnerabilities

The User Access Manager WordPress plugin before 2.3.15 does not apply its access restrictions to REST API requests, allowing unauthenticated attackers to read the content of posts, pages and custom post types that have been restricted to specific user groups.

The User Access Manager plugin for WordPress up to version 2.3.12 is vulnerable to Second-Order SQL Injection via the 'id' parameter in the AJAX action wp_ajax_save-attachment-compat. Insufficient validation of the objectId value and subsequent unparameterized use in SQL queries allow authenticated attackers with subscriber-level access to inject additional SQL queries and extract sensitive data from the database.

The User Access Manager plugin for WordPress is vulnerable to Directory Traversal in all versions up to and including 2.3.15 via the 'uamgetfile' parameter. Unauthenticated attackers can read the contents of arbitrary files on the server, which can contain sensitive information. This occurs because when attachment_url_to_postid() returns 0 for a traversal path, the plugin falls back to the global post set by a valid ?attachment_id parameter, causing the access check to pass against a legitimate public attachment while the file streamed is the attacker-chosen path.