# CVE-2026-108470: Microsoft Authentication Library (MSAL) for Node.js credential exposure

Source: https://junglewise.ai/threats/cve-2026-108470-insufficiently-protected-credentials-in-microsoft-authentication  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-108470 · Severity: medium · CVSS 6.5 · Published 2026-11-10

Microsoft's Authentication Library (MSAL) for Node.js, a widely-used component for handling user login credentials in web applications, stores authentication tokens with insufficient protection. An attacker on the network can intercept and read these credentials, potentially gaining unauthorized access to user accounts and data.

Technologies: [Microsoft Authentication Library (MSAL) for Node.js](https://junglewise.ai/threats/technologies/authentication-library-msal-for-node-js). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-108470 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108470 being exploited in the wild.

**How severe is CVE-2026-108470?** Medium severity, with a CVSS score of 6.5, published 10 November 2026.

**Which products and versions are affected?** Microsoft Authentication Library (MSAL) for Node.js.

**Is there a fix for CVE-2026-108470?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108470 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-108470?** Check whether you run Microsoft Authentication Library (MSAL) for Node.js. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability stems from insufficiently protected credentials storage in MSAL for Node.js, allowing network-based disclosure of authentication tokens or secrets. An unauthenticated attacker with network access can retrieve sensitive credential material, leading to account compromise without requiring user interaction or prior authentication.

## Affected products

- Microsoft Authentication Library (MSAL) for Node.js

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108470](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108470)

## Related threats

- [Microsoft Authentication Library (MSAL) for Node.js origin validation bypass](https://junglewise.ai/threats/cve-2026-109461-origin-validation-error-in-microsoft-authentication-library-msal)
- [Microsoft Authentication Library authentication bypass in MSAL for Node.js](https://junglewise.ai/threats/cve-2026-84003-microsoft-authentication-library-authentication-bypass-in-msal)