XenForo 2.2.1 Released (Includes Security Fix)

[Admin]

XenForo 2.2.1 is now available for all licensed customers to download. We strongly recommend that all customers running previous versions of XenForo 2.2 upgrade to this release to benefit from increased stability.

Most importantly, this release fixes two potential security vulnerabilities in XenForo.

The issues are XSS vulnerabilities. XSS (Cross Site Scripting) issues allow scripts and malicious HTML to be injected into the page, potentially allowing data theft or unauthenticated access.

XenForo extends thanks to security researcher Vincent ibn Winnie 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 221patch.zip file attached to this message. It will contain the following file:

1. src/XF/BbCode/Renderer/Html.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 these three files 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.

For instructions on how to resolve the issue by upgrading, and to see what else has changed in XenForo 2.2.1, please read on.
The following public templates have had changes:

• alert_post_pre_reg
• app_nav.less
• attachment_macros
• content_vote_macros
• message.less

Where necessary, the merge system within the "outdated templates" page should be used to integrate these changes.

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...).

Current Requirements​

Please note that XenForo 2.2 has higher system requirements than earlier versions.

The following are minimum requirements:

• PHP 7.0 or newer (PHP 7.4 recommended)
• MySQL 5.5 and newer (Also compatible with MariaDB/Percona etc.)
• All of the official add-ons require XenForo 2.2
• Enhanced Search requires at least Elasticsearch 2.0.