CVE-2026-47204

HighCVSS 7.5/10Last modified Oct 25, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
envoyproxy	envoy	>= 1.38.0, < 1.38.3; >= 1.37.0, < 1.37.5; >= 1.36.0, < 1.36.9; >= 1.26.0, < 1.35.13

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6Exploit, Vendor Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6Exploit, Vendor Advisory

Timeline

Published: Jun 26, 2026
Last modified: Oct 25, 2026
NVD status: Modified

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