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Recorded 15 Oct 2026 at 21:30 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

The historical field “Public exploit code” recorded Nuclei detection-template membership. It did not establish exploit availability. The original recorded fields remain below.

The historical “Publicly disclosed: No” field could represent a missing MSRC assessment. It does not establish that the vulnerability was undisclosed. The original recorded fields remain below.

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

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

What it said

CVE
CVE-2026-84003
Severity
Important
CVSS base score
7.4
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
Impact
Spoofing
Exploitation detected
Not reported by MSRC
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Component
Microsoft Authentication Library (MSAL) for Node.js
Weakness
CWE-294: Authentication Bypass by Capture-replay
Issued by
Microsoft
Customer action
Required: apply the update
Affected products
Microsoft Authentication Library (MSAL) for Node.js
Updates that fix it
No KB listed
CISA KEV
Not listed in the collected catalog
EPSS
0.6%; scored 15 Oct 2026
Public exploit code
No Nuclei template listed
Published
8 Sep 2026 07:00 UTC
Last revised
8 Sep 2026 07:00 UTC
Revision note
Information published.

Source evidence when recorded

Microsoft security releases
Complete at observationRead 15 Oct 2026 at 21:30 UTC
CISA KEV
Complete at observationRead 15 Oct 2026 at 21:30 UTC
FIRST EPSS
Complete at observationRead 15 Oct 2026 at 21:30 UTC
Public detection templates (Nuclei)
Complete at observationRead 15 Oct 2026 at 21:30 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version
Field-level log (3)

Up to 100 recent field edits are shown; older edits may be outside retention.

  1. 15 Oct 2026 · 21:30:54 UTC EPSS0.6%; scored 14 Oct 2026 → 0.6%; scored 15 Oct 2026
  2. 15 Oct 2026 · 01:07:54 UTC EPSS0.6%; scored 13 Oct 2026 → 0.6%; scored 14 Oct 2026
  3. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 11:03 UTC · 264 of 275 readable · 263 fully read · documentation 469/469 current