onal security release made on or after July 25th, 2023 that will fix numerous
security defects with the highest security defect considered high severity. For more information, please see the
<a href=https://discuss.istio.io/t/upcoming-istio-v1-18-1-v1-17-4-and-v1-16-6-security-releases/15864>announcement</a>.</p><div class="relnote-actions call-to-action"><a class=entry href=/v1.20/news/releases/1.17.x/announcing-1.17/upgrade-notes/><h5>BEFORE YOU UPGRADE</h5><p>Things to know and prepare before upgrading.<