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CVE-2026-47204

Envoy: grpc_stats filter segfault on Connect protocol requests to direct_response routes PUBLISHED

Description (CNA)

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.26.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the envoy.filters.http.grpc_stats filter crashes (null pointer dereference / segfault) when a Connect protocol request (Content-Type: application/connect+proto or application/connect+json) hits a direct_response route. A single unauthenticated HTTP request crashes the Envoy process. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.

Affected (CNA)

Vendor / productVersions
envoyproxy / envoyaffected >= 1.38.0, < 1.38.3; affected >= 1.37.0, < 1.37.5; affected >= 1.36.0, < 1.36.9; affected >= 1.26.0, < 1.35.13

CWE

CWE-476

References

ADP enrichment

CISA-ADP

No English description supplied.