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Vulnerability record · CVE-2022-21654 · published 22 February 2022

CVE-2022-21654: Envoyproxy envoy improper certificate validation vulnerability

Envoyproxy · Envoy

Envoy is an open source edge and service proxy, designed for cloud-native applications. Envoy's tls allows re-use when some cert validation settings have changed from their default configuration. The only workaround for this issue is to ensure that default tls settings are used. Users are advised to upgrade.

9.8 CVSS 3.1 Critical EPSS 1.1% · top 36.3% CWE-295 · Improper certificate validation
9.8CVSS 3.1 base score, v2 6.8
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. Envoy's tls allows re-use when some cert validation settings have changed from their default configuration. The only workaround for this issue is to ensure that default tls settings are used. Users are advised to upgrade.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/envoyproxy/envoy/commit/e9f936d85dc1edc34fabd0a1725ec180f2316353 PatchThird Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-5j4x-g36v-m283 Issue TrackingThird Party Advisory
https://github.com/envoyproxy/envoy/commit/e9f936d85dc1edc34fabd0a1725ec180f2316353 PatchThird Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-5j4x-g36v-m283 Issue TrackingThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-21654), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.