---
id: CVE-2026-101914
title: >-
  @grpc/grpc-js implements the core functionality of gRPC purely in JavaScript,
  without a C++ addon
summary: >-
  @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
  comparis…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-187
  - CWE-863
vendor: grpc
product: '@grpc/grpc-js-xds'
affected:
  - '@grpc/grpc-js-xds < 1.13.1'
  - '@grpc/grpc-js-xds = 1.14.0'
patched:
  - '@grpc/grpc-js-xds 1.13.1'
  - '@grpc/grpc-js-xds 1.14.1'
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T20:17:09.453'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101914'
references:
  - url: >-
      https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4
    label: security-advisories@github.com
  - url: >-
      https://github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409f
    label: security-advisories@github.com
  - url: >-
      https://github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75
    label: security-advisories@github.com
  - url: 'https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.13.1'
    label: security-advisories@github.com
  - url: 'https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.14.1'
    label: security-advisories@github.com
  - url: 'https://github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-88h9-xgvx-hvf2'
tags:
  - nvd
  - ghsa
  - npm
  - cve.org
aliases:
  - GHSA-88h9-xgvx-hvf2
ecosystem: npm
ingestedAt: '2026-09-28T20:20:05.659Z'
---

## Overview

@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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-101914)

Affected packages:

- `@grpc/grpc-js-xds < 1.13.1`
- `@grpc/grpc-js-xds = 1.14.0`

Patched in:

- `@grpc/grpc-js-xds 1.13.1`
- `@grpc/grpc-js-xds 1.14.1`

Source: https://github.com/advisories/GHSA-88h9-xgvx-hvf2