CVE catalog
CVE-2026-47220
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
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.66% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | envoy | Not reported | 1.37.5 | fixed |
| Cpe | envoy | Not reported | 1.38.3 | fixed |
| Cpe | envoy | Not reported | 1.38.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | envoy | cpe | Not reported | 1.37.5 | Not reported | Not reported | Not reported |
| Cpe | envoy | cpe | Not reported | 1.38.3 | Not reported | Not reported | Not reported |
| Cpe | envoy | cpe | Not reported | 1.38.3 | Not reported | NVD-CVE-2026-47220 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/security/cve/CVE-2026-47220]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2493652]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11141-1.json]
- [https://github.com/envoyproxy/envoy/security/advisories/GHSA-j9wh-4qfm-wf2v]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-47220]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47220.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2048.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]