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Vulnerability record · CVE-2026-22771 · published 12 January 2026

CVE-2026-22771: Envoyproxy gateway code injection vulnerability

Envoyproxy · Gateway

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.

8.8 CVSS 3.1 High EPSS 0.63% · top 51.8% CWE-94 · Code injection
8.8CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
15 Jul 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/envoyproxy/gateway/security/advisories/GHSA-xrwg-mqj6-6m22 ExploitMitigationVendor Advisory
https://access.redhat.com/security/cve/CVE-2026-22771
https://bugzilla.redhat.com/show_bug.cgi?id=2428735
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22771.json

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Source: NIST National Vulnerability Database (record CVE-2026-22771), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.