What is CVE-2026-109461?

CVE-2026-109461 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability

Which CVE IDs does CVE-2026-109461 cover?

CVE-2026-109461 covers the following CVE IDs: CVE-2026-109461. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-109461?

CVE-2026-109461 has a CVSS v3 base score of 5.9, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-109461?

CVE-2026-109461 affects 2 products, including: Microsoft Edge (Chromium-based); Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems.

CVE-2026-109461HighCVSS 5.9

Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 15, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-109461 →

📋 Description

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

🎯 Affected products2

Microsoft Edge (Chromium-based)
Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems

✅ Remediation

KBRelease Notes (Security Update) — fixed build 7.1.0

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109461
patchhttps://www.npmjs.com/package/@azure/msal-node
referencehttps://github.com/AzureAD/microsoft-authentication-library-for-js/releases