What’s Vulnerable › Vulnerabilities

CVE-2026-101916: @grpc/grpc-js: In certain configurations, getAuthContext can return unauthorized certificates as though they were authorized

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-28 · updated 2026-10-01
• Weakness: CWE-295

Description

@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.6 and 1.14.5, getAuthContext does not distinguish authorized from unauthorized peer certificates when server credentials set requireClientCertificate to false. When applications use the returned authentication context, they can treat an unauthorized certificate as authorized, causing improper authentication. @grpc/grpc-js-xds can reach this condition when RBAC authentication is enabled in affected configurations. This issue is fixed in version 1.14.5 and 1.13.6.

Affected products

• grpc-node: before 1.13.6; from 1.14.0, < 1.14.5

References

• https://github.com/grpc/grpc-node/commit/2a84ec8b01b9db68ed9d2b117a53a81449edb8ee
• https://github.com/grpc/grpc-node/commit/b4e0079c6d22a2adedfcac748e0bc083f783bc7c
• https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.14.5
• https://github.com/grpc/grpc-node/security/advisories/GHSA-m9gg-hp2v-232j

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