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

High · CVSS 7.4CVE-2026-101916

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

Answer in brief

CVE-2026-101916 records a High severity (CVSS 7.4) vulnerability in @grpc/grpc-js: In certain configurations, getAuthContext can return unauthorized certificates as though they were authorized. The current sources do not mark it as known exploited. The current feed maps grpc/grpc-node (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 28, 2026Updated Sep 28, 2026Source checked Sep 28, 2026First seen by HOL Sep 28, 2026Material review Sep 28, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps grpc/grpc-node (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
grpc/grpc-nodegeneric	<1.13.6 \|\| >=1.14.0 <1.14.5	1.13.6, 1.14.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for grpc/grpc-node.
Review the reported fix. Update grpc/grpc-node to 1.13.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 28, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.