cPanel has released new builds for all public update tiers. These updates provide targeted changes to address security concerns with the cPanel & WHM product. These builds are currently available to all customers via the standard update system.
cPanel has rated these updates as having CVSSv3 scores ranging from 2.2 to 5.0.
Information on cPanel's security ratings is available at https://go.cpanel.net/securitylevels.
If your deployed cPanel & WHM servers are configured to automatically update when new releases are available, then no action is required. Your systems will update automatically. If you have disabled automatic updates, then we strongly encourage you to update your cPanel & WHM installations at your earliest convenience.
The following cPanel & WHM versions address all known vulnerabilities:
66.0.2 & Greater 64.0.33 & Greater 62.0.27 & Greater 60.0.45 & Greater 58.0.52 & Greater 56.0.51 & Greater
The latest public releases of cPanel & WHM for all update tiers are available at http://httpupdate.cpanel.net.
SECURITY ISSUE INFORMATION
The cPanel Security Team and independent security researchers identified the resolved security issues. There is no reason to believe that these vulnerabilities have been made known to the public. As such, cPanel will only release limited information about the vulnerabilities at this time.
Once sufficient time has passed, allowing cPanel & WHM systems to automatically update to the new versions, cPanel will release additional information about the nature of the security issues. This Targeted Security Release addresses 18 vulnerabilities in cPanel & WHM software versions 66, 64, 62, 60, 58, and 56.
Additional information is scheduled for release on July 18, 2017. For information on cPanel & WHM Versions and the Release Process, read our documentation at: https://go.cpanel.net/versionformat