cPanel announced the following security notice which applies to almost all versions.
Last week, on Jan 18, 2016 cPanel released TSR-2016-0001 with important security updates for cPanel & WHM. Our records indicate the
following cPanel & WHM installations need updated:
We urge you to update to the latest build as soon as possible. The following cPanel & WHM versions address all known vulnerabilities:
18.104.22.168 & Greater
22.214.171.124 & Greater
126.96.36.199 & Greater
188.8.131.52 & Greater
To patch this, simply update cPanel via WHM or SSH.
In WHM, you can click the “Upgrade to Latest Version” link.
In SSH, you can type: