Security Advisory: Critical WordPress Vulnerability - "Click2Shell"

Update timeline

1. investigating Sep 22, 2026, 08:13 PM UTC

   WordPress has identified a critical security vulnerability designated as "Click2Shell" affecting all WordPress versions prior to 7.1.1. This vulnerability can enable unauthenticated Remote Code Execution (RCE) when a logged-in administrator visits a specially crafted link. Current Status & Hosting Actions Our engineering team is currently assessing our entire hosting fleet and determining next steps. There are currently no known workarounds for this vulnerability other than upgrading to the latest version of WordPress. Recommended Action for Customers We strongly advise all customers managing WordPress installations to review their environments immediately and update to WordPress version 7.1.1. We will continue to monitor the situation closely and provide further updates as new information becomes available.

2. identified Sep 23, 2026, 06:35 AM UTC

   Our Engineering team continues to assess and work on the WordPress security vulnerabilities across our hosting fleet. A new critical vulnerability, CVE-2026-87902, has been disclosed. WordPress 7.1.2 includes the security fix for this vulnerability. Recommended Action for Customers We strongly advise all customers managing WordPress installations to update to WordPress version 7.1.2 immediately. We will continue to monitor the situation closely and provide further updates as new information becomes available.

3. resolved Sep 25, 2026, 07:19 PM UTC

   As part of our proactive security efforts, Nexcess System Engineers scanned our fleet and automatically upgraded WordPress installations where possible to the appropriate patched versions. Automated update attempts were unsuccessful for some websites due to site-specific errors. Customers with websites that were unable to be upgraded should receive a ticket identifying the server and path to the website. All customers are strongly encouraged to confirm the Wordpress version for all of the websites, including those in staging or development, have been updated to the latest minor version of Wordpress released on September 22nd in order to protect the website from this exploit. For additional information, please refer to the official WordPress security announcements: https://wordpress.org/news/2026/09/wordpress-7-1-2-release/ https://wordpress.org/documentation/wordpress-version/version-7-1-2/ If you have any questions or need assistance with the update process, please contact our Support team. You can reach us through the following channels: Live Chat via the Customer Portal: https://my.nexcess.net/ Email: [email protected] We appreciate your patience and understanding as we work to secure your services.