WP_Query

Critical wp2shell Vulnerability Chain Exploited in WordPress for Unauthenticated Remote Code Execution and Webshell Deployment

A critical vulnerability chain dubbed wp2shell is being actively exploited against WordPress Core installations, enabling unauthenticated remote code execution and the installation of persistent webshells. The flaws affect versions 7.0.x prior to 7.0.2, 6.9.x prior to 6.9.5, and the 6.8 branch before 6.8.6, with patches now available. Attackers chain CVE-2026-63030 and CVE-2026-60137 through the WordPress REST API batch processing endpoint and an SQL injection in WP_Query via the author__not_in parameter. Observed campaigns involve mass scanning, user enumeration, attempts to read wp-config.php, and deployment of PHP webshells in wp-content/cache that return fake 404 responses. Administrators are urged to update immediately, audit logs for anomalous REST API requests, inspect for unauthorized admin accounts or plugins, and rotate credentials if wp-config.php exposure is suspected.