CVE-2026-22771
Envoy Extension Policy lua scripts injection causes arbitrary command execution
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | envoyproxy |
| Product | gateway |
| Published | Jan 12, 2026 |
| Last Updated | Jun 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
envoyproxy / gateway
< 1.5.7 >= 1.6.0-rc.0, < 1.6.2
References
github.com: https://github.com/envoyproxy/gateway/security/advisories/GHSA-xrwg-mqj6-6m22 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-22771 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2428735 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22771.json