CVE-2026-47204

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.

CVSS 3.1

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

EPSS

0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2026-06-26

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• envoyproxy:envoy

References

• https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6

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