cPanel TSR-2021-0002 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 this update as having a CVSSv3.1 score of 1.8.

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:

94.0.3 & Greater
92.0.12 & Greater
86.0.38 & Greater

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


The cPanel Security Team identified the resolved security issue. There is no reason to believe that this vulnerability has been made known to the public. As such, cPanel will only release limited information about the vulnerability 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 issue. This Targeted Security Release addresses one vulnerabilities in cPanel & WHM software versions 94, 92, and 86.

Additional information is scheduled for release on March 16th, 2021.

For information on cPanel & WHM Versions and the Release Process, read our documentation at:

Download the PGP-Signed document: