cPanel Authentication Bypass Vulnerability Actively Exploited by Multiple Threat Actors
Tags Infrastructure · Enterprise
The critical cPanel authentication bypass vulnerability (CVE-2026-41940) has moved from exploratory probing to active multi-actor exploitation, resulting in disrupted websites, ransomware and malware deployment, and targeted attacks. cPanel is used by millions of web hosting providers worldwide. The vulnerability allows unauthenticated attackers to bypass authentication controls on internet-facing cPanel instances.
Technical significance
cPanel's ubiquity in shared hosting environments means this vulnerability has a massive attack surface. Multi-actor exploitation within days of disclosure suggests the vulnerability was being actively scanned for before the patch was released. The progression from reconnaissance to ransomware deployment indicates organized threat actors are weaponizing it rapidly.