CVE-2026-84003 PUBLISHED

Microsoft Authentication Library (MSAL) for Node.js Spoofing Vulnerability

Assigner: microsoft
Reserved: 01.09.2026 Published: 08.09.2026 Updated: 08.09.2026

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

Metrics

CVSS Vector: 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
CVSS Score: 7.4

Product Status

Vendor Microsoft
Product Microsoft Authentication Library
Versions
  • affected from 1.0.0 to 5.6.0 (excl.)

References

Problem Types