CVE-2026-22771: Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based applicati

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HIGH 8.8WATCHLISTUPGRADE

CVE-2026-22771 is a high-severity flaw (CVSS 8.8) affecting gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 upst

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-01-12
Last modified	2026-07-15

Publisher (CNA): GitHub, Inc. · Vendor: envoyproxy

Last updated 2026-07-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-12 19:16 UTCPublished CVE record published
2026-07-15 02:18 UTCUpdated Record last modified

envoyproxy gateway UPGRADE

Affected: < 1.5.7 · >= 1.6.0 and < 1.6.2

Fixed in: 1.5.7, 1.6.2

Safe to downgrade to: a release before 1.6.0

1. Check installed version

apt-cache policy gateway || rpm -q gateway || gateway --version

2. UPGRADE to 1.5.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gateway

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.6.0 (Debian / Ubuntu)

apt-cache madison gateway sudo apt install gateway=<VERSION_BEFORE_1.6.0> sudo apt-mark hold gateway

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gateway sudo dnf downgrade gateway-<VERSION_BEFORE_1.6.0> sudo dnf versionlock add gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-22771?

gateway: upgrade to 1.5.7, 1.6.2. Exact commands for each OS are on this page.

Is CVE-2026-22771 being exploited?

CVE-2026-22771 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-22771 affect?

CVE-2026-22771 affects gateway. Severity is high (CVSS 8.8). 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 cre

How urgent is CVE-2026-22771?

Priority 53/100. High severity; Public exploit reference; On your watchlist

Software pages

Kubernetes vulnerabilities · Envoy vulnerabilities

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References

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