Vulnerability details

CVE-2026-22771

envoyproxy gateway

Envoy Extension Policy lua scripts injection causes arbitrary command execution

CVSS 3.1

8.8High

Official 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 scores

Score	Version	Source	Vector
8.8High	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
8.8High	3.1	CVEProject cvelistV5 (CNA) (redhat-SADP)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
envoyproxy	gateway	< 1.5.7	CVEProject cvelistV5 (CNA)
envoyproxy	gateway	>= 1.6.0-rc.0, < 1.6.2	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/envoyproxy/gateway/security/advisories/GHSA-xrwg-mqj6-6m22 x_refsource_CONFIRM
https://access.redhat.com/security/cve/CVE-2026-22771 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2428735 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22771.json x_sadp-csaf-vex

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Details

Published: 2026-01-12
Last updated: 2026-07-15
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.62%

Probability of exploitation in 30 days

49.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-94
Improper Control of Generation of Code ('Code Injection')