A critical vulnerability in cPanel, tracked as CVE-2026-41940, is being actively exploited by threat actors, including a group known as Mr_Rot13, to gain unauthorized access to web hosting environments1. This flaw allows attackers to deploy backdoors, plant SSH keys, steal credentials, and compromise hosting systems, posing a significant risk to enterprises that rely on these environments. The exploitation of this vulnerability highlights the lack of visibility into hosting supply chains, making it challenging for security teams to detect and respond to such threats. The vulnerability has been linked to a range of malicious activities, including the deployment of backdoors and the theft of sensitive credentials. As a result, CISOs must prioritize remediation efforts based on their exposure to this vulnerability and evidence of exploitation. The active exploitation of CVE-2026-41940 expands the attack surface, making it essential for practitioners to take immediate action to mitigate this risk.