medium6.5
CVE-2026-47207
Envoy is an open source edge and service proxy designed for cloud-native applications.
Impact
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, Envoy crashes if an ext_proc server sends a single gRPC message containing multiple, specially crafted ProcessingResponse messages. This can occur when the first response in the batch causes the gRPC stream object to be destroyed, leading to a use-after-free error when Envoy attempts to process subsequent responses in the same gRPC message. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Envoyproxy | Envoy | from 1.34.0 before 1.35.13 from 1.36.0 before 1.36.9 from 1.37.0 before 1.37.5 from 1.38.0 before 1.38.3 |