All intelligence
// vulnerability record
cached · NVD via COSMOS syncCVE-2026-47220
HIGHpublished 2026-06-26 19:16 UTC · 2 days ago · modified 2026-06-26 19:50 UTC
7.5
CVSS / 10
// description
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.
// cvss 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
// weaknesses (CWE)
- CWE-476