GHSA-CF3Q-GQG7-3FM9 Envoy crashes when HTTP ext_proc processes local replies

Summary Envoy's extproc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the fail of a websocket handshake will trigger a local reply leading to the crash of Envoy. PoC If both websocket and extproc are...

CVE-2025-30157 Envoy crashes when HTTP ext_proc processes local replies

Envoy is a cloud-native high-performance edge/middle/service proxy. Prior to 1.33.1, 1.32.4, 1.31.6, and 1.30.10, Envoy's extproc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the failure of a websocket...