BIT-ENVOY-2026-73547 Envoy ext_authz: request `:path` pseudoheader dereferenced w/o null check

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's extauthz filter assumes that a request contains a :path pseudoheader when applying queryparameterstoset or queryparameterstoremove from an authorization...