WHMCS has released new updates for all supported versions of WHMCS. These updates include changes that address security concerns within the WHMCS product.
WHMCS has rated these updates as having a Trivial to Important security impact. Information on security ratings can be found at http://docs.whmcs.com/Security_Levels
ReleasesPlease update your installation to the latest version.
v6.2 - 6.2.1v6.1 - 6.1.2 LTSv6.0 - 6.0.4 LTS
Patches - What is a Patch?
Incremental patches can be downloaded by...
Read more @ http://blog.whmcs.com/?t=110766