CVE-2026-47220

Fixed in a distro release EPSS <1%CVSS 7.5

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is used in log format and host related options is specified, like HOST_FIRST, SNI_FIRST, it's possible to crash Envoy when the specified host header is missing in the request headers. This vulnerability is fixed in 1.37.5 and 1.38.3.

Published 2026-06-26 · CVE record · OSV

Products: envoyproxy envoy, Red Hat OpenShift Service Mesh 2, Red Hat OpenShift Service Mesh 3

Distro releases