d>Affected Releases</td><td>1.1 to 1.1.12<br>1.2 to 1.2.3<br></td></tr></tbody></table><p>An Envoy user reported publicly an issue (c.f. <a href=https://github.com/envoyproxy/envoy/issues/7728>Envoy Issue 7728</a>) about regular expressions (or regex) matching
that crashes Envoy with very large URIs. After investigation, the Istio team has found that this issue could be leveraged for a DoS attack in Istio, if users are employing regular expressions in some of the Istio APIs: <code>JWT</code>, <code>VirtualS