CVE-2026-47220
High · 7.5CVSS
7.5
EPSS
0.7%
Published
Jun 26, 2026
CISA due date
—
The record
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is used in log format and host related options is specified, like HOST_FIRST, SNI_FIRST, it's possible to crash Envoy when the specified host header is missing in the request headers. This vulnerability is fixed in 1.37.5 and 1.38.3.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Tumbleweed | istioctl | 0 | 1.30.2-1.1 |
Related vulnerabilities
- CVE-2026-48090 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-47205 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-48743 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-48706 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-48044 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-47775 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-47221 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl
- CVE-2026-48042 Envoy is an open source edge and service proxy designed for cloud-native applications. Also affects istioctl