# CVE-2026-84003

## Summary

- **CVE ID:** CVE-2026-84003
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
- **CWE:** CWE-294
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 9, 2026

## Description

Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.

## Affected Products

- Microsoft — Microsoft Authentication Library (1.0.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84003)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._