role=treeitem title="Authentication Policy bypass (February 11, 2020)" href=/v1.5/news/security/istio-security-2020-001/>ISTIO-SECURITY-2020-001</a></li><li role=none><a role=treeitem title="Mixer policy check bypass caused by improperly accepting certain request headers (February 11, 2020)" href=/v1.5/news/security/istio-security-2020-002/>ISTIO-SECURITY-2020-002</a></li><li role=none><a role=treeitem title="Heap overflow and improper input validation in Envoy (December 10, 2019)" href=/v1.5/news/security/