34;</code></pre></code></pre><h2 id=mitigation>Mitigation</h2><ul><li>Update your authorization policies before upgrading to the
affected Istio versions. You can use this <a href=/v1.24/news/security/istio-security-2021-002/check.sh>script</a>
to check if any of the existing authorization policies
attached to the default Istio ingress gateway in the <code>istio-system</code> namespace need
to be updated. If you’re using a custom gateway installation, you can customize
the script to run with parameters app