Released 2x XenForo Released (Security Fix) 2.1.14 Security Patch

Today, we are releasing XenForo 2.1.13 to address a potential security vulnerability. We recommend that all customers still running XenForo 2.1 upgrade to 2.1.13 or use the attached patch file as soon as possible.

The issue relates to HTML attribute injection which can be triggered when rendering editor content, such as when a post is edited or quoted.

XenForo extends thanks to security researcher @PaulB, the team at @NamePros and @Xon for reporting the issues.

We recommend doing a full upgrade to resolve the issues, but a patch can be applied manually. See below for further details.

Applying a patch manually​

Download the 2113patch.zip file attached to this message. It will contain the following file:

1. src/XF/BbCode/Renderer/EditorHtml.php

Extract the zip file to your computer and upload the contents to the root of your XenForo installation. This should overwrite the files on your server with the new version.

Note: If you decide to patch the files instead of doing a full upgrade, your "File health check" will report this file as having "Unexpected contents". Because these files no longer contain the same contents your version of XF was shipped with, this is expected and can be safely ignored.

As always, new releases of XenForo are free to download for all customers with active licenses, who may now grab the new version from the customer area or upgrade from your Admin control panel (Tools > Check for upgrades...).