CVE-2023-27491CWE-20

Envoy forwards invalid Http2/Http3 downstream headers

Medium · published April 4, 2023

CVSS v3.1
5.4
EPSS
1%
Percentile
58.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00869 · 58.4th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2023-04-04T18:18Z
EPSS history
Timeline
  • 04 APR 18:18Z
    Envoy forwards invalid Http2/Http3 downstream headers
    cvelistv5