Description
The wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress before 4.6 makes a get_plugin_data call before checking the update_plugins capability, which allows remote authenticated users to bypass intended read-access restrictions via the plugin parameter to wp-admin/admin-ajax.php, a related issue to CVE-2016-6896.
Remediation
References
Related Vulnerabilities
phpMyFAQ Other Vulnerability (CVE-2005-3049)
Apache Tomcat Improper Access Control Vulnerability (CVE-2016-8735)
WordPress Plugin Download Monitor SQL Injection (4.4.4)
WordPress Plugin WP GPX Maps 'wp-gpx-maps_admin_tracks.php' Arbitrary File Upload (1.1.22)
PHP Permissions, Privileges, and Access Controls Vulnerability (CVE-2001-1247)