How severe is CVE-2026-22771?

CVE-2026-22771 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-22771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22771?

CVE-2026-22771 affects Envoyproxy Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22771?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-22771 have an EU (EUVD) identifier?

Yes. CVE-2026-22771 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2007.

When was CVE-2026-22771 published?

CVE-2026-22771 was published on 2026-01-12 and last updated on 2026-06-30.

CVE-2026-22771

CVE-2026-22771 is a high-severity vulnerability in Envoyproxy Gateway with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2007
Weakness: CWE-94
Affected product: Envoyproxy Gateway
Published: 2026-01-12
Last modified: 2026-06-30

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.

Frequently asked questions

What is CVE-2026-22771?: 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.
How severe is CVE-2026-22771?: CVE-2026-22771 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-22771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22771?: CVE-2026-22771 affects Envoyproxy Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-22771 have an EU (EUVD) identifier?: Yes. CVE-2026-22771 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2007.
When was CVE-2026-22771 published?: CVE-2026-22771 was published on 2026-01-12 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:envoyproxy:gateway:*:*:*:*:*:*:*:*

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