cPanel TSR-2017-0003 Announcement

cPanel TSR-2017-0003 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 CVSSv3 scores ranging from 2.2 to 8.2.

Information on cPanel’s security ratings is available at

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:

64.0.21 & Greater
62.0.24 & Greater
60.0.43 & Greater
58.0.49 & Greater
56.0.49 & Greater

The latest public releases of cPanel & WHM for all update tiers are available at


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 24 vulnerabilities in cPanel & WHM software versions 64, 62, 60, 58, and 56.

Additional information is scheduled for release on May 16, 2017.
For information on cPanel & WHM Versions and the Release Process, read our documentation at:

Edit: The original announcement incorrectly stated the CVSSv3 range as 2.2 to 8.8. The correct range of CVSSv3 scores has been updated to 2.2 to 8.2.

For the PGP-Signed version of this announcement please see: