[ Security Update 2025-06-03 ]
https://blog.whmcs.com/133768/security-update-2025-06-03
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Today we have released updates for all actively supported and long-term support (LTS) versions of WHMCS, namely:
* v8.13
* v8.12
* v8.11
These updates resolve a number of security vulnerabilities that have been identified as affecting all currently supported versions of WHMCS.
The majority of these vulnerabilities were discovered through routine internal security audits, while others were reported through our Security Bounty Program.
In order to safeguard users who have not yet updated to the latest version, we are deliberately limiting the disclosure of specific technical details at this time.
No updates will be issued for versions prior to v8.11.
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What You Need to Do
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We strongly recommend that you update as soon as possible, preferably using the Automatic Updater (
https://docs.whmcs.com/Updating#Automatic_Updating).
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Update Instructions
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** Automatic Update **
You can update automatically using the Automatic Updater (
https://docs.whmcs.com/Updating#Automatic_Updating). Simply navigate to: Utilities > Update WHMCS to begin the update process.
The automatic updater allows you to upgrade to the latest maintenance release for your current version by choosing 'Current Version' in the Update Settings Update Tier selection.
** Manual Update **
As always, manual downloads are also being made available for those who wish to upgrade manually. You can download both the release and incremental versions from the Download page (
https://download.whmcs.com/).
You may also reference our article on Updating (
https://docs.whmcs.com/Updating) for more in-depth, step-by-step guidance.
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Changelogs
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* 8.13.1 Changelog -
https://docs.whmcs.com/releases/8-13/8-13-change-log/
* 8.12.2 Changelog -
https://docs.whmcs.com/releases/8-12/8-12-change-log/
* 8.11.3 Changelog -
https://docs.whmcs.com/releases/8-11/8-11-change-log/
