BIT-ENVOY-2026-48090 Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)

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, the HTTP OAuth2 filter envoy.filters.http.oauth2 can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late...

BIT-ENVOY-2026-47205 Envoy: ext_authz Use-After-Free during Stream Teardown with Per-Route Overrides

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.36.0 until 1.36.9, 1.37.5, and 1.38.3, a Use-After-Free UAF vulnerability leading to a sudden segmentation fault exists in Envoy's extauthz HTTP filter when processing per-route authorization overrides...

CVE-2026-48090

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, the HTTP OAuth2 filter envoy.filters.http.oauth2 can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late...

CVE-2026-48090

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, the HTTP OAuth2 filter envoy.filters.http.oauth2 can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late...

CVE-2026-48090 Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)

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, the HTTP OAuth2 filter envoy.filters.http.oauth2 can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late...

CVE-2026-48090 Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)

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, the HTTP OAuth2 filter envoy.filters.http.oauth2 can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late...

CVE-2026-48090

Envoy CVE-2026-48090 affects the HTTP OAuth2 filter (envoy.filters.http.oauth2) in 1.37.0–1.37.5 and 1.38.3. A late AsyncClient completion can call OAuth2Filter methods after the downstream stream has been torn down, leading to undefined behavior, worker crashes, and use-after-free/invalid-vptr f...

CVE-2026-47205

CVE-2026-47205 affects Envoy’s ext_authz HTTP filter. From 1.36.0 through 1.36.9, 1.37.5, and 1.38.3, a Use-After-Free (UAF) occurs when processing per-route authorization overrides concurrently with rapid downstream disconnects. The vulnerable flow creates a transient per-route client and reallo...