cPanel has an unscheduled release for version 90 of cPanel & WHM. This update provides a targeted change to address a security concern with the cPanel & WHM product. This is currently available to all customers via the standard update system.
cPanel has rated this update as having a CVSSv3 score of 5.6.
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 version addresses this vulnerability:
90.0.13 & Greater
The latest public releases of cPanel & WHM for all update tiers are available at http://httpupdate.cpanel.net.
SECURITY ISSUE INFORMATION
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 version, cPanel will release additional information about the nature of the security issue. This Unscheduled Targeted Security Release addresses one vulnerability in cPanel & WHM software version 90.
Additional information is scheduled for release on October 06, 2020.
For information on cPanel & WHM Versions and the Release Process, read our documentation at: https://go.cpanel.net/versionformat
For the PGP-signed message, please see TSR-2020-0006.disclosure.signed