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CVE-2026-22771

Envoyproxy Gateway code injection

8.8 HIGHPublic exploitEPSS 0.62%
  1. Published12 Jan 2026

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Envoyproxy Gateway≥ 1.6.0 < 1.6.2 · < 1.5.7

Remediation

Fixed in
Envoyproxy Gateway≥ 1.6.2

References

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Frequently asked

Is CVE-2026-22771 being actively exploited?

CVE-2026-22771 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.62%.

How severe is CVE-2026-22771?

CVE-2026-22771 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.62% probability of exploitation.

Which products are affected by CVE-2026-22771?

Affected products include Envoyproxy Gateway.

How do I fix CVE-2026-22771?

Upgrade affected software to a fixed version, for example Envoyproxy Gateway 1.6.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-22771 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.