CVE-2026-47204
Envoy: grpc_stats filter segfault on Connect protocol requests to direct_response routes
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.
INFO
Published Date :
June 26, 2026, 5:37 p.m.
Last Modified :
June 26, 2026, 5:37 p.m.
Remotely Exploit :
Yes !
Source :
GitHub_M
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Envoy to version 1.35.13 or later.
- Update Envoy to version 1.36.9 or later.
- Update Envoy to version 1.37.5 or later.
- Update Envoy to version 1.38.3 or later.
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