WordPress Under Fire: CVE-2026-27540 Plugin Flaw Enables Mass Webshell Attacks
In September 2026, security researchers identified active exploitation of CVE-2026-27540, a critical vulnerability in the WooCommerce Wholesale Lead Capture WordPress plugin. The flaw allows unauthenticated attackers to upload PHP webshells through an exposed AJAX action, enabling complete site compromise. Wordfence reported blocking over 100,000 exploitation attempts, with attack spikes occurring between June and August 2026. The vulnerability affects versions 2.0.3.1 and older of the premium plugin, which was patched in version 2.0.3.2 released in February 2026. This incident highlights the ongoing threat landscape targeting WordPress ecosystems, where third-party plugin vulnerabilities continue to provide attack vectors for cybercriminals seeking to establish persistent access to websites for malicious purposes including data theft and further payload deployment.
Kill Chain