CVE-2026-47204
Published:June 26, 2026
Updated:June 29, 2026
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 Packages
github.com/envoyproxy/envoy (GO):
Affected version(s) >=v1.38.0 <v1.38.3Fix Suggestion:
Update to version v1.38.3github.com/envoyproxy/envoy (GO):
Affected version(s) >=v1.37.0 <v1.37.5Fix Suggestion:
Update to version v1.37.5github.com/envoyproxy/envoy (GO):
Affected version(s) >=v1.26.0 <v1.35.13Fix Suggestion:
Update to version v1.35.13github.com/envoyproxy/envoy (GO):
Affected version(s) >=v1.36.0 <v1.36.9Fix Suggestion:
Update to version v1.36.9Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
NULL Pointer Dereference
EPSS
Base Score:
0.45