CVE-2026-128065: Auth Bypass

Description

@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.

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Weakness Type (CWE)

CWE-863 Incorrect Authorization

References

Other References

https://github.com/grpc/grpc-node/commit/b8f3ced4d4699338dd33dc0f7b1d68d689a31d0e https://github.com/grpc/grpc-node/releases/tag/@grpc/[email protected] https://github.com/grpc/grpc-node/security/advisories/GHSA-gg5j-6742-v827 https://github.com/grpc/grpc-node/security/advisories/GHSA-gg5j-6742-v827

Frequently Asked Questions

What is CVE-2026-128065? +

@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.

How do I check if I'm vulnerable to CVE-2026-128065? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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