@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.1 and 1.14.1, the exact path (method name) matcher used by RBAC performs a prefix comparison instead of an equality comparison when case-insensitive matching is enabled. If one service method name prefixes another and the methods have different access rules, a request for the longer method can match the shorter method's rule and cause incorrect authorization. This issue is fixed in versions 1.13.1 and 1.14.1.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-88h9-xgvx-hvf2 @grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 29 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 28 Sep 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Grpc
Grpc grpc-node
Vendors & Products Grpc
Grpc grpc-node

Mon, 28 Sep 2026 20:00:00 +0000


Mon, 28 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
Description @grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.1 and 1.14.1, the exact path (method name) matcher used by RBAC performs a prefix comparison instead of an equality comparison when case-insensitive matching is enabled. If one service method name prefixes another and the methods have different access rules, a request for the longer method can match the shorter method's rule and cause incorrect authorization. This issue is fixed in versions 1.13.1 and 1.14.1.
Title @grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches
Weaknesses CWE-187
CWE-863
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-29T19:21:17.564Z

Reserved: 2026-09-28T15:55:37.907Z

Link: CVE-2026-101914

cve-icon Vulnrichment

Updated: 2026-09-29T19:21:13.538Z

cve-icon NVD

Status : Deferred

Published: 2026-09-28T20:17:09.453

Modified: 2026-09-30T19:57:08.043

Link: CVE-2026-101914

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T21:00:04Z

Weaknesses