Summary
Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What type of information could be disclosed by this vulnerability?
Successful exploitation could disclose a user's access token for a protected service to a different, attacker-controlled service. The attacker could use that token to access data available under the user's existing permissions.
According to the CVSS metric, user interaction is required (UI:R). What interaction is required?
The attacker must convince a user to connect an affected client application to an attacker-controlled server.
Security updates
7.0.1 — https://www.npmjs.com/package/@azure/msal-node/v/7.0.1
Vulnerabilities 1
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Medium 6.5
Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability
Insufficiently protected credentials in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network.
Revision history
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#1
Information published.
References
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CVE-2026-108470 Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108470
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss