What is CVE-2023-27493?

CVE-2023-27493 is a high-severity vulnerability in Envoyproxy Envoy, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2023-04-04.

How severe is CVE-2023-27493?

High severity. CVSS v3 base score is 8.1 out of 10.

Improper input validation in Envoyproxy Envoy

CVE-2023-27493

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy does not sanitize or escape request properties when generating request headers. This…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.000 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Envoyproxy Envoy — versions >= 1.25.0, < 1.25.3, >= 1.24.0, < 1.24.4, >= 1.23.0, < 1.23.6

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-w5w5-487h-qv8q (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2023-27493?: CVE-2023-27493 is a high-severity vulnerability in Envoyproxy Envoy, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2023-04-04.
How severe is CVE-2023-27493?: High severity. CVSS v3 base score is 8.1 out of 10.