CVE-2026-53714: Envoy Gateway XDS Control Plane Information Disclosure Vulnerability
HIGHCVE-2026-53714 is a HIGH (CVSS 7.4) xds control plane information disclosure vulnerability (CWE-306: Missing Authentication for Critical Function) affecting Envoy Gateway libraries in the Go ecosystem. The issue involves xds control plane information disclosure when operating in gatewaynamespacemode. Remediation is available by upgrading affected packages to version 1.8.1, 1.7.4.
CVE-2026-53714 at a Glance
Security Impact
CVSS: 7.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).
How to Fix CVE-2026-53714
To remediate this vulnerability, upgrade all affected Envoy Gateway dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/envoyproxy/gateway to 1.8.1Upgrade github.com/envoyproxy/gateway to 1.7.4Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/envoyproxy/gatewayHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-53714, inspect your project dependencies for Envoy Gateway:
inspect dependencies for github.com/envoyproxy/gatewayAnalyze the terminal output to locate any version of Envoy Gateway in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.8.1), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-306: Missing Authentication for Critical Function, where the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. In Envoy Gateway, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-53714 Affected Envoy Gateway Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/envoyproxy/gateway
|
Go |
≥ 1.8.0-rc.0
< 1.8.1
|
1.8.1
|
|
github.com/envoyproxy/gateway
|
Go |
< 1.7.4
|
1.7.4
|
References
Frequently Asked Questions
What is CVE-2026-53714?
Which Envoy Gateway versions are affected?
What version fixes CVE-2026-53714?
Is github.com/envoyproxy/gateway affected?
What is the CVSS score of CVE-2026-53714?
What CWE is associated with CVE-2026-53714?
How can I check Go dependencies for CVE-2026-53714?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-22xc-xg2r-9j7v",
"modified" : "2026-07-16T19:32:23Z",
"published" : "2026-07-16T19:32:23Z",
"aliases" : [ "CVE-2026-53714" ],
"summary" : "Envoy Gateway: xDS Control Plane Information Disclosure when operating in GatewayNamespaceMode ",
"details" : "### Impact\nWhen Envoy Gateway runs in GatewayNamespaceMode (`provider.kubernetes.deploy.type=GatewayNamespace`), the xDS gRPC server is configured with a `StreamInterceptor` for JWT authentication but no UnaryInterceptor. The go-control-plane xDS server exposes both streaming and unary (Fetch) RPC methods for all registered discovery services. Since there is no unary interceptor, these Fetch endpoints are completely unauthenticated. \n\nAdditionally, the JWT authentication interceptor in GatewayNamespaceMode only validates tokens when the received gRPC message is of type `discoveryv3.DeltaDiscoveryRequest` . If the message is a `discoveryv3.DiscoveryRequest` — used by the State-of-the-World (SotW) xDS protocol — the type assertion fails, the validation block is skipped entirely, and RecvMsg returns nil (success) without any authentication.\n\nAny pod in the cluster that can reach the xDS server (port 18000) can use the SotW protocol to bypass JWT authentication and access:\n\n* TLS private keys via StreamSecrets (SDS)\n* All xDS resources via StreamAggregatedResources (ADS)\n* Backend endpoints via StreamClusters / StreamEndpoints (CDS/EDS)\n* Routing rules via StreamRoutes / StreamListeners (RDS/LDS)\n\n### Credits\n\nEnvoy Gateway thanks @dashingDragon and @Donjon-Cerberus for reporting this issue.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/envoyproxy/gateway"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.8.0-rc.0"
}, {
"fixed" : "1.8.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/envoyproxy/gateway"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.7.4"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/envoyproxy/gateway/security/advisories/GHSA-22xc-xg2r-9j7v"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/envoyproxy/gateway"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-306" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-07-16T19:32:23Z",
"nvd_published_at" : null
}
}