Microsoft MSAL for Node.js: Information disclosure through insufficiently protected credentials
Summary
Microsoft Authentication Library (MSAL) for Node.js, used to add Microsoft Entra sign-in to Node.js applications, does not sufficiently protect credentials. An unauthorized attacker on the network can disclose information, with a confidentiality impact only. Exploitation requires user interaction, and the exact preconditions and disclosed credential types are not described in the sources reviewed.
Affected
- @azure/msal-node from 1.0.0.0 before 7.0.1 (per the CVE record)
Fixed in
- Version 7.0.1 is listed as the security update build by Microsoft; upgrade to 7.1.x is recommended because it also fixes CVE-2026-109461 (GHSA-xcx6-jx8p-x3h5), which is fixed only in 7.1.0 and higher
- Whether 7.1.x falls within the CVE-2026-108470 range has not been verified; the CVE record places 7.1.x outside it
Workaround
Unknown.
Exploitation
- Microsoft's exploit maturity field: no publicly available exploit code or theoretical exploit only
- Rapid7: Exploitation Less Likely, not publicly disclosed
- CISA SSVC: Exploitation none, Automatable no, Technical Impact partial
- Not on KEV; no proof of concept found
Our recommendation
- Run 'npm ls @azure/msal-node' on build and application servers, including transitive dependencies such as Azure Identity
- Upgrade to 7.1.x, which covers both this issue and CVE-2026-109461
- Prioritise internet-facing Node.js applications that use Entra sign-in and those handling Microsoft 365 data
- Monitor the vendor advisory for further details on the affected credentials
Information from Microsoft (Patch Tuesday November 2026)
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- MSRC Security Update Guide: CVE-2026-108470 msrc.microsoft.com
- CVE Record CVE-2026-108470 www.cve.org
- Strix: CVE-2026-108470 www.strix.ai
- Rapid7: Patch Tuesday November 2026 www.rapid7.com
- GitHub Advisory GHSA-xcx6-jx8p-x3h5 github.com
- Snyk: @azure/msal-node snyk.io
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 12:35.
Original description (NVD)
Insufficiently protected credentials in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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