New cPanel Flaw Lets a Hosting Account With Mail Privileges Run Code as Root

The Hacker News

September 9, 2026 at 8:19 AM

Overview

cPanel has addressed a serious security flaw that allows an authenticated hosting account with email privileges to execute code as the root user on a server. This vulnerability can enable a single compromised account to gain control over the entire server, posing a significant risk to the integrity of hosted websites and data. The issue affects all supported versions of cPanel and WHM, meaning a wide range of hosting providers and their customers could be impacted. cPanel released an advisory about this vulnerability on September 8, stressing the need for users to update their systems promptly to prevent potential exploitation. Server administrators should prioritize applying the necessary patches to safeguard their environments from this risk.

Key Takeaways

Affected Systems: All supported versions of cPanel and WHM
Action Required: Users should apply the latest patches provided by cPanel to secure their systems.
Timeline: Disclosed on September 8, 2023

Original Article Summary

cPanel has patched a flaw that it says lets a single hosting account take control of an entire server. An authenticated account holder with mail-related privileges can create files of their choosing on the server through EmailTrack and, from there, run code as the root user. cPanel published the advisory on September 8 and says every supported version of cPanel and WHM is affected.

Impact

All supported versions of cPanel and WHM

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Disclosed on September 8, 2023

Remediation

Users should apply the latest patches provided by cPanel to secure their systems.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Vulnerability, Update.

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