CVE-2026-84003

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

  • Published Sep 8, 2026
  • CVSS 7.4 high
  • 0.6% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-84003 at the National Vulnerability Database