CVE-2026-47204 Details
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.
A null pointer dereference vulnerability has been identified in Envoy versions 1.26.0 prior to 1.35.13, 1.36.9, 1.37.5, and 1.38.3. The issue arises in the envoy.filters.http.grpc_stats filter, which crashes the Envoy process due to a segmentation fault. This occurs when a Connect protocol request, with a Content-Type of either application/connect+proto or application/connect+json, is sent to a direct_response route. The vulnerability can be exploited by sending a single unauthenticated HTTP request, causing the Envoy process to crash.
Users can upgrade to Envoy versions 1.35.13, 1.36.9, 1.37.5, or 1.38.3 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| envoyproxy envoy | >= 1.26.0, < 1.35.13 >= 1.36.0, < 1.36.9 >= 1.37.0, < 1.37.5 >= 1.38.0, < 1.38.3 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 29, 2026 | CVE Modified | CISA-ADP |
| Jun 27, 2026 | Initial Analysis | [email protected] |
| Jun 26, 2026 | New CVE Received | [email protected] |