XenForo has released version 2.2.17, addressing a critical security vulnerability that could potentially compromise forum installations. This update focuses on fixing a security flaw that may allow malicious actors to exploit vulnerabilities within the forum software. For administrators, the solution is straightforward: update to XenForo 2.2.17 immediately to ensure your community remains protected. In this post, we’ll outline the key details of the vulnerability, why prompt action is essential, and provide a quick guide to safely upgrading your XenForo installation. Don’t wait—security is not optional.

If you don’t have a current license, you can still patch your forum installation using the instructions provided.

https://xenforo.com/community/threads/xenforo-2-2-17-released-security-fix.227797/