---
id: CVE-2026-109461
title: >-
  Microsoft Authentication Library (MSAL) for Node.js Information Disclosure
  Vulnerability
summary: >-
  Origin validation error in Microsoft Authentication Library (MSAL) for Node.js
  allows an unauthorized attacker to disclose information over a network.
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-346
vendor: Microsoft
product: Microsoft Identity Client for NodeJS
affected:
  - identity_client_for_nodejs >= 5.0.0 < 7.1.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T17:32:18.910994Z'
published: '2026-10-16'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T21:37:12.672Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109461'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109461'
    label: >-
      Microsoft Authentication Library (MSAL) for Node.js Information Disclosure
      Vulnerability
  - url: >-
      https://github.com/AzureAD/microsoft-authentication-library-for-js/security/advisories/GHSA-xcx6-jx8p-x3h5
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109461'
  - url: >-
      https://github.com/AzureAD/microsoft-authentication-library-for-js/pull/8901
  - url: >-
      https://github.com/AzureAD/microsoft-authentication-library-for-js/commit/f550958586475dbfeb1cd44be14a2d653728850e
  - url: >-
      https://github.com/AzureAD/microsoft-authentication-library-for-js/releases/tag/msal-node-v7.1.0
  - url: 'https://github.com/advisories/GHSA-xcx6-jx8p-x3h5'
tags:
  - cve.org
  - ghsa
  - npm
epss: 0.00361
epssPercentile: 0.29757
aliases:
  - GHSA-xcx6-jx8p-x3h5
ecosystem: npm
patched:
  - '@azure/msal-node 7.1.0'
scores:
  cna: 5.9
  ghsa: 7.5
ingestedAt: '2026-10-16T18:43:08.658Z'
---

## Overview

Origin validation error in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network.

## Affected

- `identity_client_for_nodejs >= 5.0.0 < 7.1.0`

## Remediation

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

## Package advisory (CVE-2026-109461)

Affected packages:

- `@azure/msal-node >= 5.0.0-beta.0, < 7.1.0`

Patched in:

- `@azure/msal-node 7.1.0`

Source: https://github.com/advisories/GHSA-xcx6-jx8p-x3h5