CVEvulnerability
CVE-2026-53718
6.4 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-14
- Last modified
- 2026-09-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.4 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L
- Weaknesses
- CWE-862
Description
Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.7.4 and 1.8.1, an HTTPRoute can use an extension-managed custom backendRef to reference a backend resource in another namespace without a matching Gateway API ReferenceGrant in the target namespace. The custom-backend branch in internal/gatewayapi/route.go omits validateBackendNamespace, allowing the route-owning namespace to bind to and use the resource without the backend namespace owner's consent and violating the Gateway API cross-namespace authorization model. This issue is fixed in versions 1.7.4 and 1.8.1.
Related
Weakness · CWE (1)
- CWE-862 Missing Authorization weakness
References
- https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464 github.com
- https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7 github.com
- https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead github.com
- https://github.com/envoyproxy/gateway/pull/9171 github.com
- https://github.com/envoyproxy/gateway/pull/9172 github.com
- https://github.com/envoyproxy/gateway/pull/9173 github.com
- https://github.com/envoyproxy/gateway/releases/tag/v1.7.4 github.com
- https://github.com/envoyproxy/gateway/releases/tag/v1.8.1 github.com
- https://github.com/envoyproxy/gateway/security/advisories/GHSA-fcrp-7gc2-93g7 github.com