CVE-2026-47204
Last modified
CVE-2026-47204 is a high-severity vulnerability rated 7.5/10 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. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
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/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Envoy | >= 1.26.0, < 1.35.13 |
| Envoyproxy | Envoy | >= 1.36.0, < 1.36.9 |
| Envoyproxy | Envoy | >= 1.37.0, < 1.37.5 |
| Envoyproxy | Envoy | >= 1.38.0, < 1.38.3 |
References
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6Exploit, Vendor Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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