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Fencer Vulns
high 8.8

CVE-2026-22771 json

Envoy Extension Policy lua scripts injection causes arbitrary command execution

published 2026-01-12 9 mo ago modified 2026-09-10 1 mo ago also BIT-envoy-gateway-2026-22771 , EUVD-2026-2007 , GHSA-xrwg-mqj6-6m22 , GO-2026-4312

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/envoyproxy/gateway 1.5.7, 1.6.2
  • bitnami envoy-gateway 1.5.7, 1.6.2
  • envoyproxy gateway 1.5.7, 1.6.2
  • govulncheck-vulndb openSUSE Leap 15.6 0.0.20260123T022811-150000.1.140.1

suse advisories SUSE-SU-2026:0292-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-22771 updated cvss 8.8

envoyproxy/gateway: Envoy Gateway: Unauthorized access to secrets via Lua script credential leakage

  • Red Hat Connectivity Link 1 rhcl-1/rhcl-rhel9-operator, rhcl-1/rhcl-operator-bundle
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
9 mo ago

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/envoyproxy/gateway/security/advisories/GHSA-xrwg-mqj6-6m22 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/envoyproxy/gateway
>=1.6.0-rc.0, <1.6.2
<1.5.7
1.6.2
1.5.7
bitnami envoy-gateway
<1.5.7
>=1.6.0, <1.6.2
1.5.7
1.6.2

Affected products

  • envoyproxy gateway
  • Red Hat Red Hat Connectivity Link 1

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.