CVE-2023-27491

CRITICAL9.1EPSS 0.01%

Envoy forwards invalid Http2/Http3 downstream headers

Published: 3/6/2024Modified: 10/15/2025
Also known as:GHSA-5jmv-cw9p-f9rpBIT-envoy-2023-27491

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.

Affected packages (1)

  • Bitnami/envoyfrom 0, < 1.22.9, >= 1.23.0, < 1.23.6, >= 1.24.0, < 1.24.4, >= 1.25.0, < 1.25.3

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1CRITICAL9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References (5)