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.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://access.redhat.com/errata/RHSA-2020:0734	Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8	Third Party Advisory
https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history	Release Notes Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0734	Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8	Third Party Advisory
https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history	Release Notes Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*

History

02 Oct 2026, 21:00

Type	Values Removed	Values Added
First Time		Envoyproxy envoy Envoyproxy
CPE	cpe:2.3:a:cncf:envoy::::::::	cpe:2.3:a:envoyproxy:envoy::::::::

Information

Published : 2020-03-04 21:15

Updated : 2026-10-02 21:00

NVD link : CVE-2020-8664

Mitre link : CVE-2020-8664

CVE.ORG link : CVE-2020-8664

JSON object : View

Products Affected

envoyproxy

envoy

CWE

CWE-287

Improper Authentication

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