Vulnerability-Lookup

CVE-2026-128065 (GCVE-0-2026-128065)

Vulnerability from cvelistv5 – Published: 2026-11-12 22:45 – Updated: 2026-11-13 00:39

Title

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

Summary

@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.

Severity

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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-13 00:38 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7886 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/grpc/grpc-node/security/adviso…	x_refsource_CONFIRM
https://github.com/grpc/grpc-node/commit/b8f3ced4…	x_refsource_MISC
https://github.com/grpc/grpc-node/releases/tag/@g…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
grpc	grpc-node	Affected: >= 1.14.0, < 1.14.2	guessed

Show details on NVD website

JSON

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FKIE_CVE-2026-128065

Vulnerability from fkie_nvd - Published: 2026-11-13 00:20 - Updated: 2026-11-13 02:18

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/grpc/grpc-node/commit/b8f3ced4d4699338dd33dc0f7b1d68d689a31d0e
	security-advisories@github.com	https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds@1.14.2
	security-advisories@github.com	https://github.com/grpc/grpc-node/security/advisories/GHSA-gg5j-6742-v827
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/grpc/grpc-node/security/advisories/GHSA-gg5j-6742-v827

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "grpc-node",
          "vendor": "grpc",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.14.0, \u003c 1.14.2"
            }
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        }
      ],
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  ],
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      "value": "@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."
    }
  ],
  "id": "CVE-2026-128065",
  "lastModified": "2026-11-13T02:18:56.263",
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GHSA-GG5J-6742-V827

Vulnerability from github – Published: 2026-11-12 22:55 – Updated: 2026-11-12 22:55

Summary

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

Details

Summary

XdsServer in @grpc/grpc-js-xds does not apply RBACPerRoute overrides from matching Route or VirtualHost resources. When a trusted xDS control plane supplies a broad top-level ALLOW policy and a stricter override, XdsServer ACKs the resources but evaluates the RPC under the top-level policy.

Details

Override parser lookup uses the override message type

parseOverrideFilterConfig() in packages/grpc-js-xds/src/http-filter.ts:225-257 looks up FILTER_REGISTRY using the override message type:

type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBACPerRoute Source: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/http-filter.ts#L225-L257

setup() in packages/grpc-js-xds/src/http-filter/rbac-filter.ts:167-173 registers the filter only under the top-level RBAC type:

type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBAC Source: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/http-filter/rbac-filter.ts#L167-L173

The lookup returns null even though the registered entry contains parseOverrideRbacConfig(), and server.ts silently skips the override.

Override maps are keyed by type URL instead of filter name

overrideConfigMaps in server.ts:99-102 is documented as keyed by HTTP filter name, but server.ts:169-174 stores each map under filterConfig.typeUrl.

Source: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/server.ts#L99-L102

Source: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/server.ts#L169-L174

Route overrides are later looked up by their typed_per_filter_config key, which is the HttpFilter.name. An ordinary key such as rbac therefore misses the stored map.

VirtualHost overrides are not read

handleRouteConfigurationResource() in server.ts:225-249 reads route.typed_per_filter_config but never reads virtualHost.typed_per_filter_config.

Source: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/server.ts#L225-L249

When no override reaches the RBAC interceptor, rbac-filter.ts:125-155 evaluates the broader top-level policy.

Proof of concept

Set:

GRPC_XDS_EXPERIMENTAL_RBAC=true

Run XdsServer with a protected unary handler.

Have the ADS control plane deliver a Listener containing an RBAC HTTP filter named rbac with a top-level ALLOW-any policy:

name: rbac
typed_config:
  "@type": type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBAC
  rules:
    action: ALLOW
    policies:
      allow-any:
        principals: [{ any: true }]
        permissions: [{ any: true }]

Deliver a matching non-forwarding route with this override:

typed_per_filter_config:
  rbac:
    "@type": type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBACPerRoute
    rbac:
      rules:
        action: DENY
        policies:
          deny-any:
            principals: [{ any: true }]
            permissions: [{ any: true }]

Invoke the protected unary method without credentials.

Expected: The route-specific DENY policy rejects the RPC before the protected handler runs.

Observed: XdsServer ACKs the resources, retains the top-level ALLOW policy, and runs the protected handler.

Listener and RouteConfiguration: ACKED
gRPC status: OK
handler invocations: 1
response: PROTECTED_SECRET_RECORD_RBAC_OVERRIDE

Impact

Users of @grpc/grpc-js-xds who are using RBAC-based authentication with override configurations may unintentionally accept some requests that should be rejected.

Severity

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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@grpc/grpc-js-xds"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.14.0"
            },
            {
              "fixed": "1.14.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-128065"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-11-12T22:55:47Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\n`XdsServer` in `@grpc/grpc-js-xds` does not apply `RBACPerRoute` overrides from matching Route or VirtualHost resources. When a trusted xDS control plane supplies a broad top-level ALLOW policy and a stricter override, `XdsServer` ACKs the resources but evaluates the RPC under the top-level policy.\n\n### Details\n\n### Override parser lookup uses the override message type\n\n`parseOverrideFilterConfig()` in packages/grpc-js-xds/src/http-filter.ts:225-257 looks up FILTER_REGISTRY using the override message type:\n\n`type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBACPerRoute`\nSource: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/http-filter.ts#L225-L257\n\n`setup()` in packages/grpc-js-xds/src/http-filter/rbac-filter.ts:167-173 registers the filter only under the top-level RBAC type:\n\n`type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBAC`\nSource: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/http-filter/rbac-filter.ts#L167-L173\n\nThe lookup returns null even though the registered entry contains `parseOverrideRbacConfig()`, and server.ts silently skips the override.\n\n### Override maps are keyed by type URL instead of filter name\n\n`overrideConfigMaps` in server.ts:99-102 is documented as keyed by HTTP filter name, but server.ts:169-174 stores each map under `filterConfig.typeUrl`.\n\nSource: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/server.ts#L99-L102\n\nSource: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/server.ts#L169-L174\n\nRoute overrides are later looked up by their `typed_per_filter_config` key, which is the `HttpFilter.name`. An ordinary key such as rbac therefore misses the stored map.\n\n### VirtualHost overrides are not read\n\n`handleRouteConfigurationResource()` in server.ts:225-249 reads `route.typed_per_filter_config` but never reads `virtualHost.typed_per_filter_config`.\n\nSource: https://github.com/grpc/grpc-node/blob/56567d9604b4e45cdca0d2e3c2a60ac227ee659d/packages/grpc-js-xds/src/server.ts#L225-L249\n\nWhen no override reaches the RBAC interceptor, rbac-filter.ts:125-155 evaluates the broader top-level policy.\n\n### Proof of concept\n\nSet:\n```\nGRPC_XDS_EXPERIMENTAL_RBAC=true\n```\n\nRun `XdsServer` with a protected unary handler.\n\nHave the ADS control plane deliver a Listener containing an RBAC HTTP filter named rbac with a top-level ALLOW-any policy:\n\n```\nname: rbac\ntyped_config:\n  \"@type\": type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBAC\n  rules:\n    action: ALLOW\n    policies:\n      allow-any:\n        principals: [{ any: true }]\n        permissions: [{ any: true }]\n```\n\nDeliver a matching non-forwarding route with this override:\n\n```\ntyped_per_filter_config:\n  rbac:\n    \"@type\": type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBACPerRoute\n    rbac:\n      rules:\n        action: DENY\n        policies:\n          deny-any:\n            principals: [{ any: true }]\n            permissions: [{ any: true }]\n```\n\nInvoke the protected unary method without credentials.\n\nExpected: The route-specific DENY policy rejects the RPC before the protected handler runs.\n\nObserved: `XdsServer` ACKs the resources, retains the top-level ALLOW policy, and runs the protected handler.\n\n```\nListener and RouteConfiguration: ACKED\ngRPC status: OK\nhandler invocations: 1\nresponse: PROTECTED_SECRET_RECORD_RBAC_OVERRIDE\n```\n\n### Impact\n\nUsers of `@grpc/grpc-js-xds` who are using RBAC-based authentication with override configurations may unintentionally accept some requests that should be rejected.",
  "id": "GHSA-gg5j-6742-v827",
  "modified": "2026-11-12T22:55:47Z",
  "published": "2026-11-12T22:55:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grpc/grpc-node/security/advisories/GHSA-gg5j-6742-v827"
    },
    {
      "type": "WEB",
      "url": "https://github.com/grpc/grpc-node/commit/b8f3ced4d4699338dd33dc0f7b1d68d689a31d0e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/grpc/grpc-node"
    },
    {
      "type": "WEB",
      "url": "https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds@1.14.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@grpc/grpc-js: RBAC override configs in VirtualHost and Route resources are not applied"
}

Sightings

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CVE-2026-128065 (GCVE-0-2026-128065)

FKIE_CVE-2026-128065

GHSA-GG5J-6742-V827

Summary

Details

Override parser lookup uses the override message type

Override maps are keyed by type URL instead of filter name

VirtualHost overrides are not read

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