cPanel & WHM Security Vulnerability – Temporary Access Restrictions – April 28, 2026 Updated on April 28, 2026 by Derrell 0 Minutes, 53 Seconds to Read cPanel has disclosed a critical authentication vulnerability affecting all currently supported versions of cPanel & WHM. This is an industry-wide issue, and we are taking immediate action to protect your environment while patches are released and verified. For full details from cPanel, see their official advisory: Critical Vulnerability with cPanel & WHM Login Authentication. Table of Contents What We Are Doing What This Means for You Questions? What We Are Doing To reduce exposure, we are temporarily closing the ports used for cPanel and WHM access on affected servers. They will remain closed until cPanel releases patches, our team applies them, and we validate that the fix is working as intended. What This Means for You Your websites, applications, databases, and email continue to operate normally. Direct cPanel and WHM logins may be temporarily unavailable. Your Account Management Panel (AMP) login is not affected. Questions? Your security and the integrity of your service are our top priority. For live updates, visit status.inmotionhosting.com. If you have questions, reach out to our Technical Support team anytime. Thank you for your patience and trust while we work to restore normal access. Share this Article Derrell Willis Manager, Developer Relations More Articles by Derrell Related Articles cPanel & WHM Security Vulnerability – Temporary Access Restrictions – April 28, 2026 How InMotion Hosting Solved MySQL Memory Leaks at Scale with TCMalloc Premium Website Builder Reaches End-of-Life Shared Servers Updated to cPanel Version 126 – Roundcube Larry Theme Removed UCEPROTECT RBL Email Scam: What It Is and How to Respond Important Update: Changes to How You Submit Technical Support Tickets Important Notice: ecbiz330 Server Failover PHP 8.4 Released How to Ask a Question How to Get the Most Out of Our Community Support Center
