# CVE-2026-128065: @grpc/grpc-js: RBAC override configs in VirtualHost and Route resources are not applied

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. From 1.14.0 through 1.14.1, XdsServer in @grpc/grpc-js-xds can acknowledge Route and VirtualHost resources while failing to apply their RBACPerRoute override configurations. The override parser is not registered under the override message type, override maps are stored under a type URL instead of the configured HTTP filter name, and VirtualHost override maps are not read. When experimental RBAC is enabled and a trusted xDS control plane supplies a broad top-level ALLOW policy with a stricter matching override, affected servers evaluate RPCs under the broad policy and can accept requests that should be denied. This issue is fixed in version 1.14.2.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- grpc / grpc-node: >= 1.14.0, < 1.14.2 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-863

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/grpc/grpc-node/security/advisories/GHSA-gg5j-6742-v827 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/grpc/grpc-node/commit/b8f3ced4d4699338dd33dc0f7b1d68d689a31d0e (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds@1.14.2 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-128065; retrieved 2026-11-12; source updated 2026-11-12

Revision: 79f69bb6e6219cb724bd928600588ee0973e11eb36ddaefb79ba885aae939892

Canonical: https://y2.dev/cve/CVE-2026-128065

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