To apply the patch
Simply download the attached zip for your IP.Board version and upload the files to your forum server.
If you are an IPS Community in the Cloud client running IP.Board 3.3 or above, no further action is necessary as we have already automatically patched your account. If you are using a version older than IP.Board 3.3, you should contact support to upgrade.
If you install or upgrade to IP.Board 3.4.8 or IP.Nexus 1.5.9 after the date and time of this post, no further action is necessary as we have already updated the main download zips.
We would like to thank ESET for reporting the IP.Board XSS issue to us, and we would like to thank user "vekmor" for reporting the IP.Nexus license key exposure issue to us.