We have received the following notification from WHMCS regarding a security risk to the software. It is important that all users take the recommended action. If you are now sure what to do, please open a support ticket and we will help you. The advisory follows:

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WHMCS Security Advisory for 5.x
WHMCS - WHMCS Security Advisory for 5.x
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WHMCS has released new patches for the 5.2 and 5.1 minor releases. These updates
provide targeted changes to address security concerns with the WHMCS product.
You are highly encouraged to update immediately.

WHMCS has rated these updates as having critical security impacts. Information
on security ratings is available at Security Levels - WHMCS Documentation


== Releases ==
The following patch release versions of WHMCS have been published to address a
specific SQL Injection vulnerability:
v5.2.8
v5.1.10

== Security Issue Information ==

The resolved security issue was publicly disclosed by "localhost" on
October 3rd, 2013.
The vulnerability allows an attacker, who has valid login to the installed
product, to craft a SQL Injection Attack via a specific URL query parameter
against any product page that updates database information.


== Mitigation ==

=== WHMCS Version 5.2 ===

Download and apply the appropriate patch files to protect against these
vulnerabilities.

Patch files for affected versions of the 5.2 series are located on the WHMCS
site as itemized below.

v5.2.8 (full version) - Downloadable from the WHMCS Members Area
v5.2.8 (patch only; for 5.2.7) - http://go.whmcs.com/218/v528_Incremental

To apply a patch, download the files indicated above and replace the files
within your installation.
No upgrade process is required.

=== WHMCS Version 5.1 ===

Download and apply the appropriate patch files to protect against these
vulnerabilities.

Patch files for affected versions of the 5.1 series are located on the WHMCS
site as itemized below.

v5.1.10 (patch only; for 5.1.9) - http://go.whmcs.com/226/v5110_Incremental

To apply a patch, download the files indicated above and replace the files
within your installation.
No upgrade process is required.

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WHMCS Limited
www.whmcs.com

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