CVE-2026-83946

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. the CNA's CVSS baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Improper neutralization of input during web page generation ('cross-site scripting') in Azure Portal allows an unauthorized attacker to perform spoofing over a network.

CVSS v3
8.2
EG Score
8.2(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 24, 2026

Advisory Details (1)

Auto-updated Sep 17, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83946

Vendor Advisories for CVE-2026-83946(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 56× in last 7d / 61× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 22:37 UTCVendor advisory
  2. 2026-09-24 22:37 UTCGHSA enrichment
  3. 2026-09-24 20:47 UTCVendor advisory
  4. 2026-09-24 20:47 UTCGHSA enrichment
  5. 2026-09-24 17:32 UTCEG score recompute
  6. 2026-09-24 17:32 UTCVendor advisory
  7. 2026-09-24 17:32 UTCGHSA enrichment
  8. 2026-09-24 14:04 UTCEPSS rescore
  9. 2026-09-24 11:20 UTCVendor advisory
  10. 2026-09-24 11:20 UTCGHSA enrichment
  11. 2026-09-23 22:51 UTCVendor advisory
  12. 2026-09-23 22:51 UTCGHSA enrichment
  13. 2026-09-23 18:41 UTCEG score recompute
  14. 2026-09-23 18:41 UTCVendor advisory
  15. 2026-09-23 18:40 UTCGHSA enrichment
  16. 2026-09-23 17:54 UTCEPSS rescore
  17. 2026-09-23 06:09 UTCVendor advisory
  18. 2026-09-23 06:09 UTCGHSA enrichment
  19. 2026-09-22 17:40 UTCEG score recompute
  20. 2026-09-22 17:40 UTCVendor advisory
  21. 2026-09-22 17:40 UTCGHSA enrichment
  22. 2026-09-22 16:01 UTCEPSS rescore
  23. 2026-09-22 04:55 UTCEG score recompute
  24. 2026-09-22 04:55 UTCVendor advisory
  25. 2026-09-22 04:55 UTCGHSA enrichment
Show 36 more
  1. 2026-09-21 21:09 UTCEPSS rescore
  2. 2026-09-21 16:26 UTCVendor advisory
  3. 2026-09-21 16:26 UTCGHSA enrichment
  4. 2026-09-21 11:27 UTCVendor advisory
  5. 2026-09-21 11:27 UTCGHSA enrichment
  6. 2026-09-20 22:58 UTCEG score recompute
  7. 2026-09-20 22:58 UTCVendor advisory
  8. 2026-09-20 22:58 UTCGHSA enrichment
  9. 2026-09-20 20:16 UTCEPSS rescore
  10. 2026-09-20 10:27 UTCVendor advisory
  11. 2026-09-20 10:27 UTCGHSA enrichment
  12. 2026-09-19 21:59 UTCEG score recompute
  13. 2026-09-19 21:59 UTCVendor advisory
  14. 2026-09-19 21:58 UTCGHSA enrichment
  15. 2026-09-19 09:29 UTCVendor advisory
  16. 2026-09-19 09:28 UTCGHSA enrichment
  17. 2026-09-18 20:54 UTCEG score recompute
  18. 2026-09-18 20:54 UTCVendor advisory
  19. 2026-09-18 20:54 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 15:23 UTCEG score recompute
  22. 2026-09-18 15:23 UTCVendor advisory
  23. 2026-09-18 15:23 UTCGHSA enrichment
  24. 2026-09-18 14:35 UTCEG score recompute
  25. 2026-09-18 14:35 UTCVendor advisory
  26. 2026-09-18 14:35 UTCGHSA enrichment
  27. 2026-09-18 14:00 UTCVendor advisory
  28. 2026-09-18 14:00 UTCGHSA enrichment
  29. 2026-09-18 12:57 UTCEG score recompute
  30. 2026-09-18 12:57 UTCVendor advisory
  31. 2026-09-18 12:57 UTCGHSA enrichment
  32. 2026-09-18 00:28 UTCEG score recompute
  33. 2026-09-18 00:28 UTCVendor advisory
  34. 2026-09-17 23:20 UTCEG score recompute
  35. 2026-09-17 23:20 UTCVendor advisory
  36. 2026-09-17 23:19 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-83946?
CVE-2026-83946 is a high vulnerability published on September 17, 2026. Improper neutralization of input during web page generation ('cross-site scripting') in Azure Portal allows an unauthorized attacker to perform spoofing over a network.
When was CVE-2026-83946 disclosed?
CVE-2026-83946 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-83946 actively exploited?
CVE-2026-83946 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.2% of all scored CVEs.
What is the CVSS score of CVE-2026-83946?
CVE-2026-83946 has a CVSS v4.0 base score of 8.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-83946?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-83946, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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