CVE-2026-84003: high-severity vulnerability in Microsoft Authentication Library
Microsoft Authentication Library (MSAL) for Node.js Spoofing Vulnerability
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.4epss 0.6%
Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.
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
Affected products
Microsoft · Microsoft Authentication LibraryRelated CVEs — Microsoft Authentication Library
In the same product, most dangerous first.