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CVE-2026-109461ImportantInformation DisclosureNetwork

Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability

MSRC advisory NVD CVE.org

Assessment

Origin validation error in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network.

Severity
Important
CVSS base score
5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Impact
Information Disclosure
EPSS · 30-day forecast
0.4%FIRST forecast dated 8 Nov 2026, for the following 30 days · FIRST percentile 30.2% · about EPSS
Public detection template
No Nuclei template is listed in the current collected catalog
Exploitation detected
No known exploitation (MSRC assessment)
Exploitability
Exploitation Less Likely
Publicly disclosed
No (MSRC assessment)
Customer action
Required: follow the MSRC remediation guidance
Component
Microsoft Authentication Library (MSAL) for Node.js
Weakness
CWE-346: Origin Validation Error
Issued by
Microsoft
Published
15 Oct 2026 · October 2026
Last revised
15 Oct 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
Attack vector
NetworkAV:N
Attack complexity
HighAC:H
Privileges required
NonePR:N
User interaction
NoneUI:N
Scope
UnchangedS:U
Confidentiality
HighC:H
Integrity
NoneI:N
Availability
NoneA:N

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Other
2 affected products
  • Microsoft Identity Client for NodeJS
  • Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems

What changed

  1. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  2. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  3. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  4. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  5. Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → No (MSRC assessment) · Exploitation detected: Not reported by MSRC → No known exploitation (MSRC assessment)
  6. Affected products: Microsoft Edge (Chromium-based), Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems → Microsoft Identity Client for NodeJS, Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems
  7. Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  8. Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  9. Affected products: Microsoft Edge (Chromium-based) → Microsoft Edge (Chromium-based), Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems
  10. Affected products: MessagePack 2.5.303 → Microsoft Edge (Chromium-based)
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 (58)

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

  1. 8 Nov 2026 · 15:16:05 UTC EPSS0.4%; scored 7 Nov 2026 → 0.4%; scored 8 Nov 2026
  2. 7 Nov 2026 · 16:12:44 UTC EPSS0.4%; scored 6 Nov 2026 → 0.4%; scored 7 Nov 2026
  3. 6 Nov 2026 · 19:15:37 UTC EPSS0.4%; scored 5 Nov 2026 → 0.4%; scored 6 Nov 2026
  4. 6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  5. 6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
  6. 6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
  7. 6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
  8. 6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  9. 6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  10. 6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
  11. 6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  12. 5 Nov 2026 · 23:42:03 UTC EPSS0.4%; scored 4 Nov 2026 → 0.4%; scored 5 Nov 2026
  13. 5 Nov 2026 · 02:36:20 UTC EPSS0.4%; scored 3 Nov 2026 → 0.4%; scored 4 Nov 2026
  14. 4 Nov 2026 · 03:04:37 UTC EPSS0.4%; scored 2 Nov 2026 → 0.4%; scored 3 Nov 2026
  15. 3 Nov 2026 · 01:53:36 UTC EPSS0.4%; scored 1 Nov 2026 → 0.4%; scored 2 Nov 2026
  16. 2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  17. 2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
  18. 2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
  19. 2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
  20. 2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  21. 2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  22. 2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
  23. 2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  24. 2 Nov 2026 · 00:36:51 UTC EPSS0.4%; scored 31 Oct 2026 → 0.4%; scored 1 Nov 2026
  25. 31 Oct 2026 · 18:22:15 UTC EPSS0.4%; scored 30 Oct 2026 → 0.4%; scored 31 Oct 2026
  26. 30 Oct 2026 · 18:02:45 UTC EPSS0.4%; scored 29 Oct 2026 → 0.4%; scored 30 Oct 2026
  27. 29 Oct 2026 · 20:19:26 UTC Public detection templateNo Nuclei template listed
  28. 29 Oct 2026 · 20:19:26 UTC Customer actionRequired: apply the update → Required: follow the MSRC remediation guidance
  29. 29 Oct 2026 · 20:19:26 UTC Publicly disclosedNo → No (MSRC assessment)
  30. 29 Oct 2026 · 20:19:26 UTC Exploitation detectedNot reported by MSRC → No known exploitation (MSRC assessment)
  31. 29 Oct 2026 · 18:33:30 UTC EPSS0.4%; scored 28 Oct 2026 → 0.4%; scored 29 Oct 2026
  32. 28 Oct 2026 · 20:00:33 UTC EPSS0.4%; scored 27 Oct 2026 → 0.4%; scored 28 Oct 2026
  33. 27 Oct 2026 · 15:48:13 UTC EPSS0.4%; scored 26 Oct 2026 → 0.4%; scored 27 Oct 2026
  34. 26 Oct 2026 · 23:57:09 UTC EPSS0.4%; scored 25 Oct 2026 → 0.4%; scored 26 Oct 2026
  35. 25 Oct 2026 · 19:05:13 UTC Affected productsMicrosoft Edge (Chromium-based), Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems → Microsoft Identity Client for NodeJS, Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems
  36. 25 Oct 2026 · 17:12:51 UTC EPSS0.3%; scored 24 Oct 2026 → 0.4%; scored 25 Oct 2026
  37. 25 Oct 2026 · 01:34:18 UTC EPSS0.3%; scored 23 Oct 2026 → 0.3%; scored 24 Oct 2026
  38. 23 Oct 2026 · 15:51:28 UTC EPSS0.3%; scored 22 Oct 2026 → 0.3%; scored 23 Oct 2026
  39. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
  40. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  41. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
  42. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
  43. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
  44. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  45. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  46. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  47. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  48. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  49. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
  50. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  51. 22 Oct 2026 · 17:33:15 UTC EPSS0.3%; scored 21 Oct 2026 → 0.3%; scored 22 Oct 2026
  52. 21 Oct 2026 · 21:47:24 UTC EPSS0.3%; scored 20 Oct 2026 → 0.3%; scored 21 Oct 2026
  53. 20 Oct 2026 · 20:53:31 UTC EPSS0.3%; scored 19 Oct 2026 → 0.3%; scored 20 Oct 2026
  54. 19 Oct 2026 · 15:12:40 UTC EPSS0.3%; scored 18 Oct 2026 → 0.3%; scored 19 Oct 2026
  55. 18 Oct 2026 · 14:54:30 UTC EPSSNot scored → 0.3%; scored 18 Oct 2026
  56. 18 Oct 2026 · 14:54:30 UTC Link: October 2026/security?release=2026-Oct#cves
  57. 17 Oct 2026 · 07:28:24 UTC Affected productsMicrosoft Edge (Chromium-based) → Microsoft Edge (Chromium-based), Microsoft Identity Client for NodeJS on Windows 10 Version 22H2 for x64-based Systems
  58. 16 Oct 2026 · 16:13:25 UTC Affected productsMessagePack 2.5.303 → Microsoft Edge (Chromium-based)

Explore global source statements, affected packages and advisory history for CVE-2026-109461. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-109461

Published

Microsoft Identity Client for NodeJS

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": "Microsoft Identity Client for NodeJS",
                    "platforms": [
                        "Windows 10 Version 22H2 for x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "5.0.0",
                            "lessThan": "7.1.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-102952

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 16, 2026, 5:11:24 PM

dateUpdated: Oct 31, 2026, 6:13:30 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-109461

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-346

Original publisher date fields

published: 2026-10-16T18:17:31.150

lastModified: 2026-10-18T12:17:05.340

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-xcx6-jx8p-x3h5

Published

@azure/msal-node

npm

SEMVER · introduced 5.0.0-beta.0 → fixed 7.1.0

Original source record · Cite this exact observation · Complete original publisher JSON

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 9 Nov 06:36 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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