CVE-2026-22771

high

Description

Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.5.7 and 1.6.2, EnvoyExtensionPolicy Lua scripts executed by Envoy proxy can be used to leak the proxy's credentials. These credentials can then be used to communicate with the control plane and gain access to all secrets that are used by Envoy proxy, e.g. TLS private keys and credentials used for downstream and upstream communication. This vulnerability is fixed in 1.5.7 and 1.6.2.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22771.json

https://github.com/envoyproxy/gateway/security/advisories/GHSA-xrwg-mqj6-6m22

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-2007

https://bugzilla.redhat.com/show_bug.cgi?id=2428735

https://access.redhat.com/security/cve/CVE-2026-22771

Details

Source: Mitre, NVD

Published: 2026-01-12

Updated: 2026-07-15

Named Vulnerability: GO-2026-4312Named Vulnerability: GHSA-xrwg-mqj6-6m22

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00385