High 7.4Published Sep 28, 2026

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

Updated under an hour ago (2026-10-19 06:10 UTC)

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EPSS puts the chance of exploitation in the next 30 days at 0.21%, higher than 10% of scored CVEs.

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Exploited in the last 30 days

@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.

CVSS: 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-295
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.21% (percentile 10)
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

grpc grpc-node grpc:node (from the name)	before 1.13.6; from 1.14.0, < 1.14.5	CNA record

References

https://github.com/grpc/grpc-node/security/advisories/GHSA-m9gg-hp2v-232jx-refsource-confirm
https://github.com/grpc/grpc-node/commit/2a84ec8b01b9db68ed9d2b117a53a81449edb8eex-refsource-misc
https://github.com/grpc/grpc-node/commit/b4e0079c6d22a2adedfcac748e0bc083f783bc7cx-refsource-misc
https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.14.5x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.