CVE-2016-6635: WordPress

High severity, CVSS 8.8. EPSS: 1.9% chance of exploitation in the next 30 days.

Cross-site request forgery (CSRF) vulnerability in the wp_ajax_wp_compression_test function in wp-admin/includes/ajax-actions.php in WordPress before 4.5 allows remote attackers to hijack the authentication of administrators for requests that change the script compression option.

Affected products

• WordPress WordPress: up to and including 4.4.2

Published 2016-08-07. Last modified 2026-06-17.