CVE-2026-47204

Name: CVE-2026-47204
Creator: NVD / NIST
Published: 2026-06-26T18:16:58.673+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10

Last modified Jun 26, 2026

CVE-2026-47204 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.

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

6.5/10

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

Weakness Enumeration

CWE-476

References

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

Timeline

Published: Jun 26, 2026
Last Modified: Jun 26, 2026
Status: Undergoing Analysis

Frequently Asked Questions

What is CVE-2026-47204?

How severe is CVE-2026-47204?

CVE-2026-47204 has a CVSS score of 6.5/10 (MEDIUM severity).

How do I fix CVE-2026-47204?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-47204?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST