| ======================================== WHMCS Security Advisory for 4.x and 5.x
 http://blog.whmcs.com/?t=76310
 ========================================
 
 WHMCS has released new patches for the 4.5, 5.0, 5.1, and 5.2 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 including critical or important security
 impacts. Information on security ratings is available at
 http://docs.whmcs.com/Security_Levels.
 
 ==Releases==
 The following full-release versions of WHMCS have been published and address all
 known vulnerabilities:
 5.2.6
 
 The latest public releases of WHMCS are available inside our members area at
 https://www.whmcs.com/members/clientarea.php
 
 PLEASE NOTE: The 4.5 series reached End Of Life as of June 30th 2013.  WHMCS is
 aware that some customers have not moved to an LTS version due to the newness of
 the LTS policy.  The related 4.5 patch release published along with this
 Security Advisory is provided as a courtesy to those customers.  From this point
 forward, there will be no more patches provided for 4.5 or any other release
 that has reached EOL.
 
 ==Security Issue Information==
 The resolved security issues were identified and reported by
 Vlad C. of NetSec Interactive Solutions <http://safeornot.net>
 Rack911 <https://www.rack911.com/>
 FastVPS Eesti OU <http://fastvps.ru>
 WHMCS development team.
 
 There is no reason to believe that these vulnerabilities are known to the
 public. As such, WHMCS will only release limited information regarding the
 vulnerabilities at this time.
 
 Once sufficient time has passed to allow WHMCS customers to update their
 installed software, WHMCS will release additional information regarding the
 nature of the security issue.
 
 These Targeted Security Releases and Patches address 9 vulnerabilities in WHMCS
 versions 4.5, 5.0, .5.1, and 5.2.
 
 ==Mitigation==
 
 ===WHMCS Version 4.5===
 Download and apply the appropriate patch files to protect against these
 vulnerabilities.
 
 Patch files for affected versions of the 4.5 series are located on the WHMCS
 site as itemized below.
 
 v4.5.6 (patch only; for 4.5.5): http://go.whmcs.com/174/v456patch
 
 To apply a patch, download the files as indicated above.  Next follow the
 regular upgrade instructions which can be found at
 http://docs.whmcs.com/Upgrading#Performing_an_Upgrade.
 
 ===WHMCS Version 5.x===
 Download and apply the appropriate full-version or patch of WHMCS to protect
 against these vulnerabilities.
 
 Patch files for affected version 5.x are located on the WHMCS site as itemized
 below. A full-version of 5.2.6 is located in the WHMCS member's area download
 section, under your license details.
 
 v5.0.7 (patch only; for 5.0.6): http://go.whmcs.com/178/v507patch
 v5.1.8 (patch only; for 5.1.7): http://go.whmcs.com/182/v518patch
 v5.2.6 (full-version) - Available in the members area @ www.whmcs.com/members
 
 To apply a patch or full-version release, download the files as indicated above.
 Next follow the regular upgrade instructions which can be found at
 http://docs.whmcs.com/Upgrading#Performing_an_Upgrade.
 
 *This Security Advisory is in the process of being emailed to all active license
 holders.*
 
 ========================================
 
 WHMCS Limited
 www.whmcs.com
 |