CVE-2020-8664

CNCF Envoy through 1.13.0 has incorrect Access Control when using SDS with Combined Validation Context. Using the same secret (e.g. trusted CA) across many resources together with the combined validation context could lead to the “static” part of the validation context to be not applied, even though it was visible in the active config dump.

• CWE-287

• https://access.redhat.com/errata/RHSA-2020:0734Third Party Advisory
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8Third Party Advisory
• https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_historyRelease Notes, Third Party Advisory
• https://access.redhat.com/errata/RHSA-2020:0734Third Party Advisory
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8Third Party Advisory
• https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_historyRelease Notes, Third Party Advisory

Published

Mar 4, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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