An update for cPanel was just released to address various security vulnerabilities and it is recommended that you update as soon as possible.
cPanel TSR-2016-0004 Announcement
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 CVSSv2 scores ranging from 1.0 to 6.8.
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:
220.127.116.11 & Greater
18.104.22.168 & Greater
22.214.171.124 & Greater
126.96.36.199 & 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 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 7 vulnerabilities in cPanel & WHM software versions 11.58, 11.56, 11.54, and 11.52.
Additional information is scheduled for release on July 19, 2016.
For information on cPanel & WHM Versions and the Release Process, read our documentation at: