CVEvulnerability

CVE-2026-47220

7.5 HIGH Published 2026-06-26 Modified 2026-10-25 Official page ↗
Status
Modified
Published
2026-06-26
Last modified
2026-10-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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.

Affected configurations

• envoyproxy envoy (>= 1.37.0 < 1.37.5) • envoyproxy envoy (>= 1.38.0 < 1.38.3)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References